diff --git a/DESIGN.md b/DESIGN.md
index 9c722e8e2..e6fb2862e 100644
--- a/DESIGN.md
+++ b/DESIGN.md
@@ -65,7 +65,7 @@ linear space. There are multiple ways to build a `BriDoc`, not all
 of which fit in linear space. So care is necessary to keep memory
 bounded.
 
-The compexities of the `BriDoc` structure, together with the lack of
+The complexities of the `BriDoc` structure, together with the lack of
 documentation, make Brittany at least challenging to maintain.
 
 ### Hindent
@@ -386,7 +386,7 @@ but arguably stills achieves consistent style.
 Forking or contributing to Hindent is not an option because if we replace
 `haskell-src-exts` with `ghc` (or `ghc-exact-print`) then we'll have to work
 with a different AST type and all the code in Hindent will become
-incompatible and there won't be much code to be re-used in that case. It is
+incompatible and there won't be much code to be reused in that case. It is
 also possible that we'll find a nicer way to write pretty-printer.
 
 ## Examples
diff --git a/app/Main.hs b/app/Main.hs
index 8348fdc04..e529f5b37 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -361,7 +361,7 @@ configParser =
         help "Fail if formatting is not idempotent"
       ]
     -- We cannot parse the source type here, because we might need to do
-    -- autodection based on the input file extension (not available here)
+    -- autodetection based on the input file extension (not available here)
     -- before storing the resolved value in the config struct.
     <*> pure ModuleSource
     <*> (option parseColorMode . mconcat)
diff --git a/data/examples/declaration/data/record-out.hs b/data/examples/declaration/data/record-out.hs
index 7de59452f..9371f60b4 100644
--- a/data/examples/declaration/data/record-out.hs
+++ b/data/examples/declaration/data/record-out.hs
@@ -12,7 +12,7 @@ data Foo = Foo
     fooGag,
     fooGog ::
       NonEmpty
-        ( Indentity
+        ( Identity
             Bool
         ),
     -- | Huh!
diff --git a/data/examples/declaration/data/record.hs b/data/examples/declaration/data/record.hs
index 89b5567de..bac906fb8 100644
--- a/data/examples/declaration/data/record.hs
+++ b/data/examples/declaration/data/record.hs
@@ -6,7 +6,7 @@ data Foo = Foo
   { fooX :: Int -- ^ X
   , fooY :: Int -- ^ Y
   , fooBar, fooBaz :: NonEmpty (Identity Bool) -- ^ BarBaz
-  , fooGag, fooGog :: NonEmpty (Indentity
+  , fooGag, fooGog :: NonEmpty (Identity
                                   Bool)
     -- ^ GagGog
   , fooFoo
diff --git a/data/examples/declaration/rewrite-rule/prelude2-out.hs b/data/examples/declaration/rewrite-rule/prelude2-out.hs
index 2f07a8d75..007a9ea7d 100644
--- a/data/examples/declaration/rewrite-rule/prelude2-out.hs
+++ b/data/examples/declaration/rewrite-rule/prelude2-out.hs
@@ -11,7 +11,7 @@
 -- when we disable the rule that expands (++) into foldr
 
 -- The foldr/cons rule looks nice, but it can give disastrously
--- bloated code when commpiling
+-- bloated code when compiling
 --      array (a,b) [(1,2), (2,2), (3,2), ...very long list... ]
 -- i.e. when there are very very long literal lists
 -- So I've disabled it for now. We could have special cases
diff --git a/data/examples/declaration/rewrite-rule/prelude2.hs b/data/examples/declaration/rewrite-rule/prelude2.hs
index 9c8081c8f..79990b23c 100644
--- a/data/examples/declaration/rewrite-rule/prelude2.hs
+++ b/data/examples/declaration/rewrite-rule/prelude2.hs
@@ -11,7 +11,7 @@
         -- when we disable the rule that expands (++) into foldr
 
 -- The foldr/cons rule looks nice, but it can give disastrously
--- bloated code when commpiling
+-- bloated code when compiling
 --      array (a,b) [(1,2), (2,2), (3,2), ...very long list... ]
 -- i.e. when there are very very long literal lists
 -- So I've disabled it for now. We could have special cases
diff --git a/data/examples/declaration/value/function/arrow/proc-do-complex-out.hs b/data/examples/declaration/value/function/arrow/proc-do-complex-out.hs
index eef06bf5d..9bf87e021 100644
--- a/data/examples/declaration/value/function/arrow/proc-do-complex-out.hs
+++ b/data/examples/declaration/value/function/arrow/proc-do-complex-out.hs
@@ -12,7 +12,7 @@ foo
         )
     -> do
       -- Begin do
-      (x, y) <- -- GHC parser fails if layed out over multiple lines
+      (x, y) <- -- GHC parser fails if laid out over multiple lines
         f -- Call into f
           ( a,
             c -- Tuple together arguments
diff --git a/data/examples/declaration/value/function/arrow/proc-do-complex.hs b/data/examples/declaration/value/function/arrow/proc-do-complex.hs
index f4cce670a..bf80be85a 100644
--- a/data/examples/declaration/value/function/arrow/proc-do-complex.hs
+++ b/data/examples/declaration/value/function/arrow/proc-do-complex.hs
@@ -9,7 +9,7 @@ foo
         (e, f)
       ) ->
     do -- Begin do
-        (x,y) -- GHC parser fails if layed out over multiple lines
+        (x,y) -- GHC parser fails if laid out over multiple lines
          <- f -- Call into f
               (a,
                c) -- Tuple together arguments
diff --git a/src/Ormolu/Printer/Meat/Common.hs b/src/Ormolu/Printer/Meat/Common.hs
index 73664570a..aada158aa 100644
--- a/src/Ormolu/Printer/Meat/Common.hs
+++ b/src/Ormolu/Printer/Meat/Common.hs
@@ -47,7 +47,7 @@ data FamilyStyle
   | -- | Top-level declarations
     Free
 
--- | Outputs the name of the module-like entity, preceeded by the correct prefix ("module" or "signature").
+-- | Outputs the name of the module-like entity, preceded by the correct prefix ("module" or "signature").
 p_hsmodName :: ModuleName -> R ()
 p_hsmodName mname = do
   sourceType <- askSourceType
@@ -92,7 +92,7 @@ p_rdrName l = located l $ \x -> do
       -- insert spaces when we have a parenthesized operator starting with `#`.
       handleUnboxedSumsAndHashInteraction
         | unboxedSums,
-          -- Qualified names do not start wth a `#`.
+          -- Qualified names do not start with a `#`.
           Unqual (occNameString -> '#' : _) <- x =
             \y -> space *> y <* space
         | otherwise = id
diff --git a/src/Ormolu/Printer/Meat/Declaration/Value.hs b/src/Ormolu/Printer/Meat/Declaration/Value.hs
index 2f6f0cc22..1b2d40871 100644
--- a/src/Ormolu/Printer/Meat/Declaration/Value.hs
+++ b/src/Ormolu/Printer/Meat/Declaration/Value.hs
@@ -121,7 +121,7 @@ p_matchGroup' placer render style mg@MG {..} = do
 -- | Function id obtained through pattern matching on 'FunBind' should not
 -- be used to print the actual equations because the different ‘RdrNames’
 -- used in the equations may have different “decorations” (such as backticks
--- and paretheses) associated with them. It is necessary to use per-equation
+-- and parentheses) associated with them. It is necessary to use per-equation
 -- names obtained from 'm_ctxt' of 'Match'. This function replaces function
 -- name inside of 'Function' accordingly.
 adjustMatchGroupStyle ::
@@ -588,7 +588,7 @@ p_hsExpr :: HsExpr GhcPs -> R ()
 p_hsExpr = p_hsExpr' NotApplicand N
 
 -- | An applicand is the left-hand side in a function application, i.e. @f@ in
--- @f a@. We need to track this in order to add extra identation in cases like
+-- @f a@. We need to track this in order to add extra indentation in cases like
 --
 -- > foo =
 -- >   do
diff --git a/tests/Ormolu/Fixity/ParserSpec.hs b/tests/Ormolu/Fixity/ParserSpec.hs
index d6aa4904a..b49e515bb 100644
--- a/tests/Ormolu/Fixity/ParserSpec.hs
+++ b/tests/Ormolu/Fixity/ParserSpec.hs
@@ -214,7 +214,7 @@ spec = do
                 elabel "module name"
               ]
           )
-    it "fails with correct parse error (typo: export intead exports)" $
+    it "fails with correct parse error (typo: export instead exports)" $
       parseModuleReexportDeclaration "module Control.Lens export Control.Lens.Lens"
         `shouldFailWith` err
           20