diff --git a/compiler/rustc_ast_lowering/src/expr.rs b/compiler/rustc_ast_lowering/src/expr.rs
index 4d6afd2fe0d..b118c0eaed4 100644
--- a/compiler/rustc_ast_lowering/src/expr.rs
+++ b/compiler/rustc_ast_lowering/src/expr.rs
@@ -260,9 +260,9 @@ impl<'hir> LoweringContext<'_, 'hir> {
 
     fn lower_unop(&mut self, u: UnOp) -> hir::UnOp {
         match u {
-            UnOp::Deref => hir::UnOp::UnDeref,
-            UnOp::Not => hir::UnOp::UnNot,
-            UnOp::Neg => hir::UnOp::UnNeg,
+            UnOp::Deref => hir::UnOp::Deref,
+            UnOp::Not => hir::UnOp::Not,
+            UnOp::Neg => hir::UnOp::Neg,
         }
     }
 
diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index 49d9e3b60b4..9609510d0af 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -1112,25 +1112,25 @@ pub type BinOp = Spanned<BinOpKind>;
 #[derive(Copy, Clone, PartialEq, Encodable, Debug, HashStable_Generic)]
 pub enum UnOp {
     /// The `*` operator (deferencing).
-    UnDeref,
+    Deref,
     /// The `!` operator (logical negation).
-    UnNot,
+    Not,
     /// The `-` operator (negation).
-    UnNeg,
+    Neg,
 }
 
 impl UnOp {
     pub fn as_str(self) -> &'static str {
         match self {
-            Self::UnDeref => "*",
-            Self::UnNot => "!",
-            Self::UnNeg => "-",
+            Self::Deref => "*",
+            Self::Not => "!",
+            Self::Neg => "-",
         }
     }
 
     /// Returns `true` if the unary operator takes its argument by value.
     pub fn is_by_value(self) -> bool {
-        matches!(self, Self::UnNeg | Self::UnNot)
+        matches!(self, Self::Neg | Self::Not)
     }
 }
 
@@ -1477,7 +1477,7 @@ impl Expr<'_> {
             // https://github.com/rust-lang/rfcs/blob/master/text/0803-type-ascription.md#type-ascription-and-temporaries
             ExprKind::Type(ref e, _) => e.is_place_expr(allow_projections_from),
 
-            ExprKind::Unary(UnOp::UnDeref, _) => true,
+            ExprKind::Unary(UnOp::Deref, _) => true,
 
             ExprKind::Field(ref base, _) | ExprKind::Index(ref base, _) => {
                 allow_projections_from(base) || base.is_place_expr(allow_projections_from)
diff --git a/compiler/rustc_lint/src/types.rs b/compiler/rustc_lint/src/types.rs
index 1e879d29370..784b36c2837 100644
--- a/compiler/rustc_lint/src/types.rs
+++ b/compiler/rustc_lint/src/types.rs
@@ -472,7 +472,7 @@ fn lint_literal<'tcx>(
 impl<'tcx> LateLintPass<'tcx> for TypeLimits {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx hir::Expr<'tcx>) {
         match e.kind {
-            hir::ExprKind::Unary(hir::UnOp::UnNeg, ref expr) => {
+            hir::ExprKind::Unary(hir::UnOp::Neg, ref expr) => {
                 // propagate negation, if the negation itself isn't negated
                 if self.negated_expr_id != Some(e.hir_id) {
                     self.negated_expr_id = Some(expr.hir_id);
diff --git a/compiler/rustc_middle/src/ty/consts.rs b/compiler/rustc_middle/src/ty/consts.rs
index 041c040f0b7..ed953b98113 100644
--- a/compiler/rustc_middle/src/ty/consts.rs
+++ b/compiler/rustc_middle/src/ty/consts.rs
@@ -55,7 +55,7 @@ impl<'tcx> Const<'tcx> {
 
         let lit_input = match expr.kind {
             hir::ExprKind::Lit(ref lit) => Some(LitToConstInput { lit: &lit.node, ty, neg: false }),
-            hir::ExprKind::Unary(hir::UnOp::UnNeg, ref expr) => match expr.kind {
+            hir::ExprKind::Unary(hir::UnOp::Neg, ref expr) => match expr.kind {
                 hir::ExprKind::Lit(ref lit) => {
                     Some(LitToConstInput { lit: &lit.node, ty, neg: true })
                 }
diff --git a/compiler/rustc_mir_build/src/thir/cx/expr.rs b/compiler/rustc_mir_build/src/thir/cx/expr.rs
index 2962cbe8157..620ce360e7d 100644
--- a/compiler/rustc_mir_build/src/thir/cx/expr.rs
+++ b/compiler/rustc_mir_build/src/thir/cx/expr.rs
@@ -299,7 +299,7 @@ fn make_mirror_unadjusted<'a, 'tcx>(
             }
         }
 
-        hir::ExprKind::Unary(hir::UnOp::UnDeref, ref arg) => {
+        hir::ExprKind::Unary(hir::UnOp::Deref, ref arg) => {
             if cx.typeck_results().is_method_call(expr) {
                 overloaded_place(cx, expr, expr_ty, None, vec![arg.to_ref()], expr.span)
             } else {
@@ -307,7 +307,7 @@ fn make_mirror_unadjusted<'a, 'tcx>(
             }
         }
 
-        hir::ExprKind::Unary(hir::UnOp::UnNot, ref arg) => {
+        hir::ExprKind::Unary(hir::UnOp::Not, ref arg) => {
             if cx.typeck_results().is_method_call(expr) {
                 overloaded_operator(cx, expr, vec![arg.to_ref()])
             } else {
@@ -315,7 +315,7 @@ fn make_mirror_unadjusted<'a, 'tcx>(
             }
         }
 
-        hir::ExprKind::Unary(hir::UnOp::UnNeg, ref arg) => {
+        hir::ExprKind::Unary(hir::UnOp::Neg, ref arg) => {
             if cx.typeck_results().is_method_call(expr) {
                 overloaded_operator(cx, expr, vec![arg.to_ref()])
             } else if let hir::ExprKind::Lit(ref lit) = arg.kind {
diff --git a/compiler/rustc_mir_build/src/thir/pattern/mod.rs b/compiler/rustc_mir_build/src/thir/pattern/mod.rs
index 7186e26be80..6e29e60b303 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/mod.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/mod.rs
@@ -866,7 +866,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
                     return *self.const_to_pat(value, expr.hir_id, expr.span, false).kind;
                 }
                 hir::ExprKind::Lit(ref lit) => (lit, false),
-                hir::ExprKind::Unary(hir::UnOp::UnNeg, ref expr) => {
+                hir::ExprKind::Unary(hir::UnOp::Neg, ref expr) => {
                     let lit = match expr.kind {
                         hir::ExprKind::Lit(ref lit) => lit,
                         _ => span_bug!(expr.span, "not a literal: {:?}", expr),
diff --git a/compiler/rustc_passes/src/region.rs b/compiler/rustc_passes/src/region.rs
index 64356f73f6c..b532021bed2 100644
--- a/compiler/rustc_passes/src/region.rs
+++ b/compiler/rustc_passes/src/region.rs
@@ -664,7 +664,7 @@ fn resolve_local<'tcx>(
 
             match expr.kind {
                 hir::ExprKind::AddrOf(_, _, ref subexpr)
-                | hir::ExprKind::Unary(hir::UnOp::UnDeref, ref subexpr)
+                | hir::ExprKind::Unary(hir::UnOp::Deref, ref subexpr)
                 | hir::ExprKind::Field(ref subexpr, _)
                 | hir::ExprKind::Index(ref subexpr, _) => {
                     expr = &subexpr;
diff --git a/compiler/rustc_typeck/src/check/demand.rs b/compiler/rustc_typeck/src/check/demand.rs
index 3c9c683f4b0..8d2004a543b 100644
--- a/compiler/rustc_typeck/src/check/demand.rs
+++ b/compiler/rustc_typeck/src/check/demand.rs
@@ -773,7 +773,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             if let hir::ExprKind::Lit(lit) = &expr.kind { lit.node.is_suffixed() } else { false }
         };
         let is_negative_int =
-            |expr: &hir::Expr<'_>| matches!(expr.kind, hir::ExprKind::Unary(hir::UnOp::UnNeg, ..));
+            |expr: &hir::Expr<'_>| matches!(expr.kind, hir::ExprKind::Unary(hir::UnOp::Neg, ..));
         let is_uint = |ty: Ty<'_>| matches!(ty.kind(), ty::Uint(..));
 
         let in_const_context = self.tcx.hir().is_inside_const_context(expr.hir_id);
diff --git a/compiler/rustc_typeck/src/check/expr.rs b/compiler/rustc_typeck/src/check/expr.rs
index 9692b0524e7..b7b4fb0648b 100644
--- a/compiler/rustc_typeck/src/check/expr.rs
+++ b/compiler/rustc_typeck/src/check/expr.rs
@@ -323,15 +323,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     ) -> Ty<'tcx> {
         let tcx = self.tcx;
         let expected_inner = match unop {
-            hir::UnOp::UnNot | hir::UnOp::UnNeg => expected,
-            hir::UnOp::UnDeref => NoExpectation,
+            hir::UnOp::Not | hir::UnOp::Neg => expected,
+            hir::UnOp::Deref => NoExpectation,
         };
         let mut oprnd_t = self.check_expr_with_expectation(&oprnd, expected_inner);
 
         if !oprnd_t.references_error() {
             oprnd_t = self.structurally_resolved_type(expr.span, oprnd_t);
             match unop {
-                hir::UnOp::UnDeref => {
+                hir::UnOp::Deref => {
                     if let Some(ty) = self.lookup_derefing(expr, oprnd, oprnd_t) {
                         oprnd_t = ty;
                     } else {
@@ -353,14 +353,14 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         oprnd_t = tcx.ty_error();
                     }
                 }
-                hir::UnOp::UnNot => {
+                hir::UnOp::Not => {
                     let result = self.check_user_unop(expr, oprnd_t, unop);
                     // If it's builtin, we can reuse the type, this helps inference.
                     if !(oprnd_t.is_integral() || *oprnd_t.kind() == ty::Bool) {
                         oprnd_t = result;
                     }
                 }
-                hir::UnOp::UnNeg => {
+                hir::UnOp::Neg => {
                     let result = self.check_user_unop(expr, oprnd_t, unop);
                     // If it's builtin, we can reuse the type, this helps inference.
                     if !oprnd_t.is_numeric() {
diff --git a/compiler/rustc_typeck/src/check/op.rs b/compiler/rustc_typeck/src/check/op.rs
index 9ab056c0d74..567cb1a90d0 100644
--- a/compiler/rustc_typeck/src/check/op.rs
+++ b/compiler/rustc_typeck/src/check/op.rs
@@ -681,7 +681,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         format!("cannot apply unary operator `{}`", op.as_str()),
                     );
                     match actual.kind() {
-                        Uint(_) if op == hir::UnOp::UnNeg => {
+                        Uint(_) if op == hir::UnOp::Neg => {
                             err.note("unsigned values cannot be negated");
 
                             if let hir::ExprKind::Unary(
@@ -711,9 +711,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         Ref(_, ref lty, _) if *lty.kind() == Str => {}
                         _ => {
                             let missing_trait = match op {
-                                hir::UnOp::UnNeg => "std::ops::Neg",
-                                hir::UnOp::UnNot => "std::ops::Not",
-                                hir::UnOp::UnDeref => "std::ops::UnDerf",
+                                hir::UnOp::Neg => "std::ops::Neg",
+                                hir::UnOp::Not => "std::ops::Not",
+                                hir::UnOp::Deref => "std::ops::UnDerf",
                             };
                             suggest_impl_missing(&mut err, operand_ty, &missing_trait);
                         }
@@ -782,9 +782,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     span_bug!(span, "&& and || are not overloadable")
                 }
             }
-        } else if let Op::Unary(hir::UnOp::UnNot, _) = op {
+        } else if let Op::Unary(hir::UnOp::Not, _) = op {
             (sym::not, lang.not_trait())
-        } else if let Op::Unary(hir::UnOp::UnNeg, _) = op {
+        } else if let Op::Unary(hir::UnOp::Neg, _) = op {
             (sym::neg, lang.neg_trait())
         } else {
             bug!("lookup_op_method: op not supported: {:?}", op)
diff --git a/compiler/rustc_typeck/src/check/place_op.rs b/compiler/rustc_typeck/src/check/place_op.rs
index 502cb562385..254e41706f9 100644
--- a/compiler/rustc_typeck/src/check/place_op.rs
+++ b/compiler/rustc_typeck/src/check/place_op.rs
@@ -203,7 +203,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
 
         while let hir::ExprKind::Field(ref expr, _)
         | hir::ExprKind::Index(ref expr, _)
-        | hir::ExprKind::Unary(hir::UnOp::UnDeref, ref expr) = exprs.last().unwrap().kind
+        | hir::ExprKind::Unary(hir::UnOp::Deref, ref expr) = exprs.last().unwrap().kind
         {
             exprs.push(&expr);
         }
@@ -216,7 +216,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             debug!("convert_place_derefs_to_mutable: i={} expr={:?}", i, expr);
 
             let mut source = self.node_ty(expr.hir_id);
-            if matches!(expr.kind, hir::ExprKind::Unary(hir::UnOp::UnDeref, _)) {
+            if matches!(expr.kind, hir::ExprKind::Unary(hir::UnOp::Deref, _)) {
                 // Clear previous flag; after a pointer indirection it does not apply any more.
                 inside_union = false;
             }
@@ -270,7 +270,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 hir::ExprKind::Index(ref base_expr, ..) => {
                     self.convert_place_op_to_mutable(PlaceOp::Index, expr, base_expr);
                 }
-                hir::ExprKind::Unary(hir::UnOp::UnDeref, ref base_expr) => {
+                hir::ExprKind::Unary(hir::UnOp::Deref, ref base_expr) => {
                     self.convert_place_op_to_mutable(PlaceOp::Deref, expr, base_expr);
                 }
                 _ => {}
diff --git a/compiler/rustc_typeck/src/check/writeback.rs b/compiler/rustc_typeck/src/check/writeback.rs
index 4d18b2cb3fc..4f785982150 100644
--- a/compiler/rustc_typeck/src/check/writeback.rs
+++ b/compiler/rustc_typeck/src/check/writeback.rs
@@ -138,7 +138,7 @@ impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> {
     // operating on scalars, we clear the overload.
     fn fix_scalar_builtin_expr(&mut self, e: &hir::Expr<'_>) {
         match e.kind {
-            hir::ExprKind::Unary(hir::UnOp::UnNeg | hir::UnOp::UnNot, ref inner) => {
+            hir::ExprKind::Unary(hir::UnOp::Neg | hir::UnOp::Not, ref inner) => {
                 let inner_ty = self.fcx.node_ty(inner.hir_id);
                 let inner_ty = self.fcx.resolve_vars_if_possible(inner_ty);
 
diff --git a/compiler/rustc_typeck/src/expr_use_visitor.rs b/compiler/rustc_typeck/src/expr_use_visitor.rs
index bd2c266d93d..52110af4792 100644
--- a/compiler/rustc_typeck/src/expr_use_visitor.rs
+++ b/compiler/rustc_typeck/src/expr_use_visitor.rs
@@ -184,7 +184,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
 
             hir::ExprKind::Type(ref subexpr, _) => self.walk_expr(subexpr),
 
-            hir::ExprKind::Unary(hir::UnOp::UnDeref, ref base) => {
+            hir::ExprKind::Unary(hir::UnOp::Deref, ref base) => {
                 // *base
                 self.select_from_expr(base);
             }
diff --git a/compiler/rustc_typeck/src/mem_categorization.rs b/compiler/rustc_typeck/src/mem_categorization.rs
index fef52a3f87c..14af11097cf 100644
--- a/compiler/rustc_typeck/src/mem_categorization.rs
+++ b/compiler/rustc_typeck/src/mem_categorization.rs
@@ -303,7 +303,7 @@ impl<'a, 'tcx> MemCategorizationContext<'a, 'tcx> {
 
         let expr_ty = self.expr_ty(expr)?;
         match expr.kind {
-            hir::ExprKind::Unary(hir::UnOp::UnDeref, ref e_base) => {
+            hir::ExprKind::Unary(hir::UnOp::Deref, ref e_base) => {
                 if self.typeck_results.is_method_call(expr) {
                     self.cat_overloaded_place(expr, e_base)
                 } else {
diff --git a/src/librustdoc/clean/utils.rs b/src/librustdoc/clean/utils.rs
index 2c829c49953..8f005be7cf7 100644
--- a/src/librustdoc/clean/utils.rs
+++ b/src/librustdoc/clean/utils.rs
@@ -316,7 +316,7 @@ crate fn is_literal_expr(cx: &DocContext<'_>, hir_id: hir::HirId) -> bool {
             return true;
         }
 
-        if let hir::ExprKind::Unary(hir::UnOp::UnNeg, expr) = &expr.kind {
+        if let hir::ExprKind::Unary(hir::UnOp::Neg, expr) = &expr.kind {
             if let hir::ExprKind::Lit(_) = &expr.kind {
                 return true;
             }
diff --git a/src/tools/clippy/clippy_lints/src/arithmetic.rs b/src/tools/clippy/clippy_lints/src/arithmetic.rs
index 9861d8cfc4e..61fdf9495b9 100644
--- a/src/tools/clippy/clippy_lints/src/arithmetic.rs
+++ b/src/tools/clippy/clippy_lints/src/arithmetic.rs
@@ -91,7 +91,7 @@ impl<'tcx> LateLintPass<'tcx> for Arithmetic {
                     match op.node {
                         hir::BinOpKind::Div | hir::BinOpKind::Rem => match &r.kind {
                             hir::ExprKind::Lit(_lit) => (),
-                            hir::ExprKind::Unary(hir::UnOp::UnNeg, expr) => {
+                            hir::ExprKind::Unary(hir::UnOp::Neg, expr) => {
                                 if let hir::ExprKind::Lit(lit) = &expr.kind {
                                     if let rustc_ast::ast::LitKind::Int(1, _) = lit.node {
                                         span_lint(cx, INTEGER_ARITHMETIC, expr.span, "integer arithmetic detected");
@@ -114,7 +114,7 @@ impl<'tcx> LateLintPass<'tcx> for Arithmetic {
                     self.expr_span = Some(expr.span);
                 }
             },
-            hir::ExprKind::Unary(hir::UnOp::UnNeg, arg) => {
+            hir::ExprKind::Unary(hir::UnOp::Neg, arg) => {
                 let ty = cx.typeck_results().expr_ty(arg);
                 if constant_simple(cx, cx.typeck_results(), expr).is_none() {
                     if ty.is_integral() {
diff --git a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
index aa431f0596c..77b26faaa58 100644
--- a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
+++ b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
@@ -112,7 +112,7 @@ enum AssertKind {
 fn match_assert_with_message<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<AssertKind> {
     if_chain! {
         if let ExprKind::If(ref cond, ref then, _) = expr.kind;
-        if let ExprKind::Unary(UnOp::UnNot, ref expr) = cond.kind;
+        if let ExprKind::Unary(UnOp::Not, ref expr) = cond.kind;
         // bind the first argument of the `assert!` macro
         if let Some((Constant::Bool(is_true), _)) = constant(cx, cx.typeck_results(), expr);
         // block
diff --git a/src/tools/clippy/clippy_lints/src/booleans.rs b/src/tools/clippy/clippy_lints/src/booleans.rs
index 90bb0bd555f..0713303ec4b 100644
--- a/src/tools/clippy/clippy_lints/src/booleans.rs
+++ b/src/tools/clippy/clippy_lints/src/booleans.rs
@@ -110,7 +110,7 @@ impl<'a, 'tcx, 'v> Hir2Qmm<'a, 'tcx, 'v> {
         // prevent folding of `cfg!` macros and the like
         if !e.span.from_expansion() {
             match &e.kind {
-                ExprKind::Unary(UnOp::UnNot, inner) => return Ok(Bool::Not(box self.run(inner)?)),
+                ExprKind::Unary(UnOp::Not, inner) => return Ok(Bool::Not(box self.run(inner)?)),
                 ExprKind::Binary(binop, lhs, rhs) => match &binop.node {
                     BinOpKind::Or => {
                         return Ok(Bool::Or(self.extract(BinOpKind::Or, &[lhs, rhs], Vec::new())?));
@@ -454,7 +454,7 @@ impl<'a, 'tcx> Visitor<'tcx> for NonminimalBoolVisitor<'a, 'tcx> {
             ExprKind::Binary(binop, _, _) if binop.node == BinOpKind::Or || binop.node == BinOpKind::And => {
                 self.bool_expr(e)
             },
-            ExprKind::Unary(UnOp::UnNot, inner) => {
+            ExprKind::Unary(UnOp::Not, inner) => {
                 if self.cx.typeck_results().node_types()[inner.hir_id].is_bool() {
                     self.bool_expr(e);
                 } else {
@@ -482,7 +482,7 @@ impl<'a, 'tcx> Visitor<'tcx> for NotSimplificationVisitor<'a, 'tcx> {
     type Map = Map<'tcx>;
 
     fn visit_expr(&mut self, expr: &'tcx Expr<'_>) {
-        if let ExprKind::Unary(UnOp::UnNot, inner) = &expr.kind {
+        if let ExprKind::Unary(UnOp::Not, inner) = &expr.kind {
             if let Some(suggestion) = simplify_not(self.cx, inner) {
                 span_lint_and_sugg(
                     self.cx,
diff --git a/src/tools/clippy/clippy_lints/src/bytecount.rs b/src/tools/clippy/clippy_lints/src/bytecount.rs
index ac9098a7584..b8828719f62 100644
--- a/src/tools/clippy/clippy_lints/src/bytecount.rs
+++ b/src/tools/clippy/clippy_lints/src/bytecount.rs
@@ -101,7 +101,7 @@ fn check_arg(name: Symbol, arg: Symbol, needle: &Expr<'_>) -> bool {
 
 fn get_path_name(expr: &Expr<'_>) -> Option<Symbol> {
     match expr.kind {
-        ExprKind::Box(ref e) | ExprKind::AddrOf(BorrowKind::Ref, _, ref e) | ExprKind::Unary(UnOp::UnDeref, ref e) => {
+        ExprKind::Box(ref e) | ExprKind::AddrOf(BorrowKind::Ref, _, ref e) | ExprKind::Unary(UnOp::Deref, ref e) => {
             get_path_name(e)
         },
         ExprKind::Block(ref b, _) => {
diff --git a/src/tools/clippy/clippy_lints/src/collapsible_match.rs b/src/tools/clippy/clippy_lints/src/collapsible_match.rs
index 604ba102046..b83aae0e571 100644
--- a/src/tools/clippy/clippy_lints/src/collapsible_match.rs
+++ b/src/tools/clippy/clippy_lints/src/collapsible_match.rs
@@ -186,7 +186,7 @@ fn addr_adjusted_binding(mut expr: &Expr<'_>, cx: &LateContext<'_>) -> Option<Hi
                 Res::Local(binding_id) => break Some(binding_id),
                 _ => break None,
             },
-            ExprKind::Unary(UnOp::UnDeref, e) if cx.typeck_results().expr_ty(e).is_ref() => expr = e,
+            ExprKind::Unary(UnOp::Deref, e) if cx.typeck_results().expr_ty(e).is_ref() => expr = e,
             _ => break None,
         }
     }
diff --git a/src/tools/clippy/clippy_lints/src/consts.rs b/src/tools/clippy/clippy_lints/src/consts.rs
index 640cffd24a7..1b89d0bbe38 100644
--- a/src/tools/clippy/clippy_lints/src/consts.rs
+++ b/src/tools/clippy/clippy_lints/src/consts.rs
@@ -242,9 +242,9 @@ impl<'a, 'tcx> ConstEvalLateContext<'a, 'tcx> {
                 self.expr(value).map(|v| Constant::Repeat(Box::new(v), n))
             },
             ExprKind::Unary(op, ref operand) => self.expr(operand).and_then(|o| match op {
-                UnOp::UnNot => self.constant_not(&o, self.typeck_results.expr_ty(e)),
-                UnOp::UnNeg => self.constant_negate(&o, self.typeck_results.expr_ty(e)),
-                UnOp::UnDeref => Some(if let Constant::Ref(r) = o { *r } else { o }),
+                UnOp::Not => self.constant_not(&o, self.typeck_results.expr_ty(e)),
+                UnOp::Neg => self.constant_negate(&o, self.typeck_results.expr_ty(e)),
+                UnOp::Deref => Some(if let Constant::Ref(r) = o { *r } else { o }),
             }),
             ExprKind::If(ref cond, ref then, ref otherwise) => self.ifthenelse(cond, then, *otherwise),
             ExprKind::Binary(op, ref left, ref right) => self.binop(op, left, right),
diff --git a/src/tools/clippy/clippy_lints/src/entry.rs b/src/tools/clippy/clippy_lints/src/entry.rs
index 37948e06869..6b9f9a56754 100644
--- a/src/tools/clippy/clippy_lints/src/entry.rs
+++ b/src/tools/clippy/clippy_lints/src/entry.rs
@@ -55,7 +55,7 @@ declare_lint_pass!(HashMapPass => [MAP_ENTRY]);
 impl<'tcx> LateLintPass<'tcx> for HashMapPass {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if let ExprKind::If(ref check, ref then_block, ref else_block) = expr.kind {
-            if let ExprKind::Unary(UnOp::UnNot, ref check) = check.kind {
+            if let ExprKind::Unary(UnOp::Not, ref check) = check.kind {
                 if let Some((ty, map, key)) = check_cond(cx, check) {
                     // in case of `if !m.contains_key(&k) { m.insert(k, v); }`
                     // we can give a better error message
diff --git a/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs b/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs
index ffef78aac80..086a791520f 100644
--- a/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs
+++ b/src/tools/clippy/clippy_lints/src/floating_point_arithmetic.rs
@@ -129,7 +129,7 @@ fn get_specialized_log_method(cx: &LateContext<'_>, base: &Expr<'_>) -> Option<&
 fn prepare_receiver_sugg<'a>(cx: &LateContext<'_>, mut expr: &'a Expr<'a>) -> Sugg<'a> {
     let mut suggestion = Sugg::hir(cx, expr, "..");
 
-    if let ExprKind::Unary(UnOp::UnNeg, inner_expr) = &expr.kind {
+    if let ExprKind::Unary(UnOp::Neg, inner_expr) = &expr.kind {
         expr = &inner_expr;
     }
 
@@ -541,12 +541,12 @@ fn is_zero(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
 /// If the two expressions are not negations of each other, then it
 /// returns None.
 fn are_negated<'a>(cx: &LateContext<'_>, expr1: &'a Expr<'a>, expr2: &'a Expr<'a>) -> Option<(bool, &'a Expr<'a>)> {
-    if let ExprKind::Unary(UnOp::UnNeg, expr1_negated) = &expr1.kind {
+    if let ExprKind::Unary(UnOp::Neg, expr1_negated) = &expr1.kind {
         if eq_expr_value(cx, expr1_negated, expr2) {
             return Some((false, expr2));
         }
     }
-    if let ExprKind::Unary(UnOp::UnNeg, expr2_negated) = &expr2.kind {
+    if let ExprKind::Unary(UnOp::Neg, expr2_negated) = &expr2.kind {
         if eq_expr_value(cx, expr1, expr2_negated) {
             return Some((true, expr1));
         }
diff --git a/src/tools/clippy/clippy_lints/src/functions.rs b/src/tools/clippy/clippy_lints/src/functions.rs
index 87954254610..71a146cc298 100644
--- a/src/tools/clippy/clippy_lints/src/functions.rs
+++ b/src/tools/clippy/clippy_lints/src/functions.rs
@@ -644,7 +644,7 @@ impl<'a, 'tcx> intravisit::Visitor<'tcx> for DerefVisitor<'a, 'tcx> {
                     }
                 }
             },
-            hir::ExprKind::Unary(hir::UnOp::UnDeref, ref ptr) => self.check_arg(ptr),
+            hir::ExprKind::Unary(hir::UnOp::Deref, ref ptr) => self.check_arg(ptr),
             _ => (),
         }
 
diff --git a/src/tools/clippy/clippy_lints/src/map_clone.rs b/src/tools/clippy/clippy_lints/src/map_clone.rs
index 1818836d5d5..bd0be880289 100644
--- a/src/tools/clippy/clippy_lints/src/map_clone.rs
+++ b/src/tools/clippy/clippy_lints/src/map_clone.rs
@@ -70,7 +70,7 @@ impl<'tcx> LateLintPass<'tcx> for MapClone {
                     },
                     hir::PatKind::Binding(hir::BindingAnnotation::Unannotated, .., name, None) => {
                         match closure_expr.kind {
-                            hir::ExprKind::Unary(hir::UnOp::UnDeref, ref inner) => {
+                            hir::ExprKind::Unary(hir::UnOp::Deref, ref inner) => {
                                 if ident_eq(name, inner) {
                                     if let ty::Ref(.., Mutability::Not) = cx.typeck_results().expr_ty(inner).kind() {
                                         lint(cx, e.span, args[0].span, true);
diff --git a/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs b/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs
index 44c974b9d98..eaa604c2ae6 100644
--- a/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs
+++ b/src/tools/clippy/clippy_lints/src/methods/manual_saturating_arithmetic.rs
@@ -148,7 +148,7 @@ fn is_min_or_max<'tcx>(cx: &LateContext<'tcx>, expr: &hir::Expr<'_>) -> Option<M
     }
 
     if ty.is_signed() {
-        if let hir::ExprKind::Unary(hir::UnOp::UnNeg, val) = &expr.kind {
+        if let hir::ExprKind::Unary(hir::UnOp::Neg, val) = &expr.kind {
             return check_lit(val, true);
         }
     }
@@ -163,7 +163,7 @@ enum Sign {
 }
 
 fn lit_sign(expr: &hir::Expr<'_>) -> Option<Sign> {
-    if let hir::ExprKind::Unary(hir::UnOp::UnNeg, inner) = &expr.kind {
+    if let hir::ExprKind::Unary(hir::UnOp::Neg, inner) = &expr.kind {
         if let hir::ExprKind::Lit(..) = &inner.kind {
             return Some(Sign::Neg);
         }
diff --git a/src/tools/clippy/clippy_lints/src/methods/mod.rs b/src/tools/clippy/clippy_lints/src/methods/mod.rs
index 4ee423b383b..0918843294d 100644
--- a/src/tools/clippy/clippy_lints/src/methods/mod.rs
+++ b/src/tools/clippy/clippy_lints/src/methods/mod.rs
@@ -2619,7 +2619,7 @@ fn lint_get_unwrap<'tcx>(cx: &LateContext<'tcx>, expr: &hir::Expr<'_>, get_args:
     if_chain! {
         if needs_ref;
         if let Some(parent) = get_parent_expr(cx, expr);
-        if let hir::ExprKind::Unary(hir::UnOp::UnDeref, _) = parent.kind;
+        if let hir::ExprKind::Unary(hir::UnOp::Deref, _) = parent.kind;
         then {
             needs_ref = false;
             span = parent.span;
@@ -3063,7 +3063,7 @@ fn lint_filter_map<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>, is_f
             // in `filter(|x| ..)`, replace `*x` with `x`
             let a_path = if_chain! {
                 if !is_filter_param_ref;
-                if let ExprKind::Unary(UnOp::UnDeref, expr_path) = a.kind;
+                if let ExprKind::Unary(UnOp::Deref, expr_path) = a.kind;
                 then { expr_path } else { a }
             };
             // let the filter closure arg and the map closure arg be equal
@@ -3708,8 +3708,8 @@ fn lint_option_as_ref_deref<'tcx>(
                 },
                 hir::ExprKind::AddrOf(hir::BorrowKind::Ref, m, ref inner) if same_mutability(m) => {
                     if_chain! {
-                        if let hir::ExprKind::Unary(hir::UnOp::UnDeref, ref inner1) = inner.kind;
-                        if let hir::ExprKind::Unary(hir::UnOp::UnDeref, ref inner2) = inner1.kind;
+                        if let hir::ExprKind::Unary(hir::UnOp::Deref, ref inner1) = inner.kind;
+                        if let hir::ExprKind::Unary(hir::UnOp::Deref, ref inner2) = inner1.kind;
                         if let hir::ExprKind::Path(ref qpath) = inner2.kind;
                         if let hir::def::Res::Local(local_id) = cx.qpath_res(qpath, inner2.hir_id);
                         then {
@@ -4065,7 +4065,7 @@ fn lint_filetype_is_file(cx: &LateContext<'_>, expr: &hir::Expr<'_>, args: &[hir
     if_chain! {
         if let Some(parent) = get_parent_expr(cx, expr);
         if let hir::ExprKind::Unary(op, _) = parent.kind;
-        if op == hir::UnOp::UnNot;
+        if op == hir::UnOp::Not;
         then {
             lint_unary = "!";
             verb = "denies";
diff --git a/src/tools/clippy/clippy_lints/src/misc.rs b/src/tools/clippy/clippy_lints/src/misc.rs
index 0512d74c7b1..2ef5c6aa2a4 100644
--- a/src/tools/clippy/clippy_lints/src/misc.rs
+++ b/src/tools/clippy/clippy_lints/src/misc.rs
@@ -502,7 +502,7 @@ fn is_allowed<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> bool {
 // Return true if `expr` is the result of `signum()` invoked on a float value.
 fn is_signum(cx: &LateContext<'_>, expr: &Expr<'_>) -> bool {
     // The negation of a signum is still a signum
-    if let ExprKind::Unary(UnOp::UnNeg, ref child_expr) = expr.kind {
+    if let ExprKind::Unary(UnOp::Neg, ref child_expr) = expr.kind {
         return is_signum(cx, &child_expr);
     }
 
@@ -586,7 +586,7 @@ fn check_to_owned(cx: &LateContext<'_>, expr: &Expr<'_>, other: &Expr<'_>, left:
         return;
     }
 
-    let other_gets_derefed = matches!(other.kind, ExprKind::Unary(UnOp::UnDeref, _));
+    let other_gets_derefed = matches!(other.kind, ExprKind::Unary(UnOp::Deref, _));
 
     let lint_span = if other_gets_derefed {
         expr.span.to(other.span)
diff --git a/src/tools/clippy/clippy_lints/src/needless_bool.rs b/src/tools/clippy/clippy_lints/src/needless_bool.rs
index d795f126457..f283ff1715f 100644
--- a/src/tools/clippy/clippy_lints/src/needless_bool.rs
+++ b/src/tools/clippy/clippy_lints/src/needless_bool.rs
@@ -195,7 +195,7 @@ struct ExpressionInfoWithSpan {
 }
 
 fn is_unary_not(e: &Expr<'_>) -> (bool, Span) {
-    if let ExprKind::Unary(UnOp::UnNot, operand) = e.kind {
+    if let ExprKind::Unary(UnOp::Not, operand) = e.kind {
         return (true, operand.span);
     }
     (false, e.span)
diff --git a/src/tools/clippy/clippy_lints/src/neg_cmp_op_on_partial_ord.rs b/src/tools/clippy/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
index 4fb899125e8..ec0ad58ca9c 100644
--- a/src/tools/clippy/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
+++ b/src/tools/clippy/clippy_lints/src/neg_cmp_op_on_partial_ord.rs
@@ -50,7 +50,7 @@ impl<'tcx> LateLintPass<'tcx> for NoNegCompOpForPartialOrd {
         if_chain! {
 
             if !in_external_macro(cx.sess(), expr.span);
-            if let ExprKind::Unary(UnOp::UnNot, ref inner) = expr.kind;
+            if let ExprKind::Unary(UnOp::Not, ref inner) = expr.kind;
             if let ExprKind::Binary(ref op, ref left, _) = inner.kind;
             if let BinOpKind::Le | BinOpKind::Ge | BinOpKind::Lt | BinOpKind::Gt = op.node;
 
diff --git a/src/tools/clippy/clippy_lints/src/neg_multiply.rs b/src/tools/clippy/clippy_lints/src/neg_multiply.rs
index aa550510867..ef7cc65cfcf 100644
--- a/src/tools/clippy/clippy_lints/src/neg_multiply.rs
+++ b/src/tools/clippy/clippy_lints/src/neg_multiply.rs
@@ -32,8 +32,8 @@ impl<'tcx> LateLintPass<'tcx> for NegMultiply {
             if BinOpKind::Mul == op.node {
                 match (&left.kind, &right.kind) {
                     (&ExprKind::Unary(..), &ExprKind::Unary(..)) => {},
-                    (&ExprKind::Unary(UnOp::UnNeg, ref lit), _) => check_mul(cx, e.span, lit, right),
-                    (_, &ExprKind::Unary(UnOp::UnNeg, ref lit)) => check_mul(cx, e.span, lit, left),
+                    (&ExprKind::Unary(UnOp::Neg, ref lit), _) => check_mul(cx, e.span, lit, right),
+                    (_, &ExprKind::Unary(UnOp::Neg, ref lit)) => check_mul(cx, e.span, lit, left),
                     _ => {},
                 }
             }
diff --git a/src/tools/clippy/clippy_lints/src/non_copy_const.rs b/src/tools/clippy/clippy_lints/src/non_copy_const.rs
index f57d7536317..0b2262d8490 100644
--- a/src/tools/clippy/clippy_lints/src/non_copy_const.rs
+++ b/src/tools/clippy/clippy_lints/src/non_copy_const.rs
@@ -383,7 +383,7 @@ impl<'tcx> LateLintPass<'tcx> for NonCopyConst {
                             needs_check_adjustment = false;
                             break;
                         },
-                        ExprKind::Unary(UnOp::UnDeref, _) => {
+                        ExprKind::Unary(UnOp::Deref, _) => {
                             // `*e` => desugared to `*Deref::deref(&e)`,
                             // meaning `e` must be referenced.
                             // no need to go further up since a method call is involved now.
diff --git a/src/tools/clippy/clippy_lints/src/option_if_let_else.rs b/src/tools/clippy/clippy_lints/src/option_if_let_else.rs
index 7bdf975ffd4..9ef0d267b0b 100644
--- a/src/tools/clippy/clippy_lints/src/option_if_let_else.rs
+++ b/src/tools/clippy/clippy_lints/src/option_if_let_else.rs
@@ -181,7 +181,7 @@ fn detect_option_if_let_else<'tcx>(
             };
             let cond_expr = match &cond_expr.kind {
                 // Pointer dereferencing happens automatically, so we can omit it in the suggestion
-                ExprKind::Unary(UnOp::UnDeref, expr) | ExprKind::AddrOf(_, _, expr) => expr,
+                ExprKind::Unary(UnOp::Deref, expr) | ExprKind::AddrOf(_, _, expr) => expr,
                 _ => cond_expr,
             };
             Some(OptionIfLetElseOccurence {
diff --git a/src/tools/clippy/clippy_lints/src/shadow.rs b/src/tools/clippy/clippy_lints/src/shadow.rs
index d5b1767e945..32f6bc74642 100644
--- a/src/tools/clippy/clippy_lints/src/shadow.rs
+++ b/src/tools/clippy/clippy_lints/src/shadow.rs
@@ -389,7 +389,7 @@ fn is_self_shadow(name: Symbol, expr: &Expr<'_>) -> bool {
         ExprKind::Block(ref block, _) => {
             block.stmts.is_empty() && block.expr.as_ref().map_or(false, |e| is_self_shadow(name, e))
         },
-        ExprKind::Unary(op, ref inner) => (UnOp::UnDeref == op) && is_self_shadow(name, inner),
+        ExprKind::Unary(op, ref inner) => (UnOp::Deref == op) && is_self_shadow(name, inner),
         ExprKind::Path(QPath::Resolved(_, ref path)) => path_eq_name(name, path),
         _ => false,
     }
diff --git a/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs b/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs
index 3a688a7bbef..0b7d08cb164 100644
--- a/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs
+++ b/src/tools/clippy/clippy_lints/src/suspicious_trait_impl.rs
@@ -194,7 +194,7 @@ impl<'tcx> Visitor<'tcx> for BinaryExprVisitor {
     fn visit_expr(&mut self, expr: &'tcx hir::Expr<'_>) {
         match expr.kind {
             hir::ExprKind::Binary(..)
-            | hir::ExprKind::Unary(hir::UnOp::UnNot | hir::UnOp::UnNeg, _)
+            | hir::ExprKind::Unary(hir::UnOp::Not | hir::UnOp::Neg, _)
             | hir::ExprKind::AssignOp(..) => self.nb_binops += 1,
             _ => {},
         }
diff --git a/src/tools/clippy/clippy_lints/src/transmute.rs b/src/tools/clippy/clippy_lints/src/transmute.rs
index d977cea4da5..dc938ed0238 100644
--- a/src/tools/clippy/clippy_lints/src/transmute.rs
+++ b/src/tools/clippy/clippy_lints/src/transmute.rs
@@ -586,7 +586,7 @@ impl<'tcx> LateLintPass<'tcx> for Transmute {
                             let mut expr = &args[0];
                             let mut arg = sugg::Sugg::hir(cx, expr, "..");
 
-                            if let ExprKind::Unary(UnOp::UnNeg, inner_expr) = &expr.kind {
+                            if let ExprKind::Unary(UnOp::Neg, inner_expr) = &expr.kind {
                                 expr = &inner_expr;
                             }
 
diff --git a/src/tools/clippy/clippy_lints/src/types.rs b/src/tools/clippy/clippy_lints/src/types.rs
index 04c32ce9e8f..58af5b12c37 100644
--- a/src/tools/clippy/clippy_lints/src/types.rs
+++ b/src/tools/clippy/clippy_lints/src/types.rs
@@ -1706,13 +1706,13 @@ impl<'tcx> LateLintPass<'tcx> for Casts {
 }
 
 fn is_unary_neg(expr: &Expr<'_>) -> bool {
-    matches!(expr.kind, ExprKind::Unary(UnOp::UnNeg, _))
+    matches!(expr.kind, ExprKind::Unary(UnOp::Neg, _))
 }
 
 fn get_numeric_literal<'e>(expr: &'e Expr<'e>) -> Option<&'e Lit> {
     match expr.kind {
         ExprKind::Lit(ref lit) => Some(lit),
-        ExprKind::Unary(UnOp::UnNeg, e) => {
+        ExprKind::Unary(UnOp::Neg, e) => {
             if let ExprKind::Lit(ref lit) = e.kind {
                 Some(lit)
             } else {
@@ -2868,7 +2868,7 @@ declare_lint_pass!(RefToMut => [CAST_REF_TO_MUT]);
 impl<'tcx> LateLintPass<'tcx> for RefToMut {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if_chain! {
-            if let ExprKind::Unary(UnOp::UnDeref, e) = &expr.kind;
+            if let ExprKind::Unary(UnOp::Deref, e) = &expr.kind;
             if let ExprKind::Cast(e, t) = &e.kind;
             if let TyKind::Ptr(MutTy { mutbl: Mutability::Mut, .. }) = t.kind;
             if let ExprKind::Cast(e, t) = &e.kind;
diff --git a/src/tools/clippy/clippy_lints/src/unwrap.rs b/src/tools/clippy/clippy_lints/src/unwrap.rs
index b82909eaea6..2fb0463c5a6 100644
--- a/src/tools/clippy/clippy_lints/src/unwrap.rs
+++ b/src/tools/clippy/clippy_lints/src/unwrap.rs
@@ -108,7 +108,7 @@ fn collect_unwrap_info<'tcx>(
             },
             _ => (),
         }
-    } else if let ExprKind::Unary(UnOp::UnNot, expr) = &expr.kind {
+    } else if let ExprKind::Unary(UnOp::Not, expr) = &expr.kind {
         return collect_unwrap_info(cx, expr, branch, !invert);
     } else {
         if_chain! {
diff --git a/src/tools/clippy/clippy_lints/src/utils/higher.rs b/src/tools/clippy/clippy_lints/src/utils/higher.rs
index 340d340d6d3..145703d1bdc 100644
--- a/src/tools/clippy/clippy_lints/src/utils/higher.rs
+++ b/src/tools/clippy/clippy_lints/src/utils/higher.rs
@@ -243,7 +243,7 @@ pub fn extract_assert_macro_args<'tcx>(e: &'tcx Expr<'tcx>) -> Option<Vec<&'tcx
                 // macros with unique arg: `{debug_}assert!` (e.g., `debug_assert!(some_condition)`)
                 if_chain! {
                     if let ExprKind::If(ref clause, _, _)  = matchexpr.kind;
-                    if let ExprKind::Unary(UnOp::UnNot, condition) = clause.kind;
+                    if let ExprKind::Unary(UnOp::Not, condition) = clause.kind;
                     then {
                         return Some(vec![condition]);
                     }
diff --git a/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs b/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs
index cccad243e1b..ff3be590317 100644
--- a/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs
+++ b/src/tools/clippy/clippy_lints/src/utils/internal_lints.rs
@@ -1001,7 +1001,7 @@ impl InterningDefinedSymbol {
         // SymbolStr might be de-referenced: `&*symbol.as_str()`
         let call = if_chain! {
             if let ExprKind::AddrOf(_, _, e) = expr.kind;
-            if let ExprKind::Unary(UnOp::UnDeref, e) = e.kind;
+            if let ExprKind::Unary(UnOp::Deref, e) = e.kind;
             then { e } else { expr }
         };
         if_chain! {
diff --git a/src/tools/clippy/tests/ui/suspicious_arithmetic_impl.rs b/src/tools/clippy/tests/ui/suspicious_arithmetic_impl.rs
index 5c280efac1a..ae253a0487c 100644
--- a/src/tools/clippy/tests/ui/suspicious_arithmetic_impl.rs
+++ b/src/tools/clippy/tests/ui/suspicious_arithmetic_impl.rs
@@ -117,7 +117,7 @@ impl Add for Bar {
     type Output = Bar;
 
     fn add(self, other: Self) -> Self {
-        Bar(self.0 & !other.0) // OK: UnNot part of BiExpr as child node
+        Bar(self.0 & !other.0) // OK: Not part of BiExpr as child node
     }
 }
 
@@ -126,7 +126,7 @@ impl Sub for Bar {
 
     fn sub(self, other: Self) -> Self {
         if self.0 <= other.0 {
-            Bar(-(self.0 & other.0)) // OK: UnNeg part of BiExpr as parent node
+            Bar(-(self.0 & other.0)) // OK: Neg part of BiExpr as parent node
         } else {
             Bar(0)
         }