diff --git a/src/testdir/test_channel.vim b/src/testdir/test_channel.vim
index a13b49f..a99497d 100644
--- a/src/testdir/test_channel.vim
+++ b/src/testdir/test_channel.vim
@@ -2563,11 +2563,11 @@
 
   " Test for using a one time callback function to process a response
   let g:lspOtMsgs = []
-  let r = ch_sendexpr(ch, #{method: 'msg-specifc-cb', params: {}},
+  let r = ch_sendexpr(ch, #{method: 'msg-specific-cb', params: {}},
         \ #{callback: 'LspOtCb'})
   call assert_equal(9, r.id)
   call assert_equal('alive', ch_evalexpr(ch, #{method: 'ping'}).result)
-  call assert_equal([#{id: 9, jsonrpc: '2.0', result: 'msg-specifc-cb'}],
+  call assert_equal([#{id: 9, jsonrpc: '2.0', result: 'msg-specific-cb'}],
         \ g:lspOtMsgs)
 
   " Test for generating a request message from the other end (server)
diff --git a/src/testdir/test_channel_lsp.py b/src/testdir/test_channel_lsp.py
index ea0fd10..2357452 100644
--- a/src/testdir/test_channel_lsp.py
+++ b/src/testdir/test_channel_lsp.py
@@ -164,7 +164,7 @@
         self.send_lsp_msg(payload['id'], 'msg-with-id')
 
     def do_msg_specific_cb(self, payload):
-        self.send_lsp_msg(payload['id'], 'msg-specifc-cb')
+        self.send_lsp_msg(payload['id'], 'msg-specific-cb')
 
     def do_server_req(self, payload):
         self.send_lsp_msg(201, {'method': 'checkhealth', 'params': {'a': 20}})
@@ -205,7 +205,7 @@
                         'simple-notif': self.do_simple_notif,
                         'multi-notif': self.do_multi_notif,
                         'msg-with-id': self.do_msg_with_id,
-                        'msg-specifc-cb': self.do_msg_specific_cb,
+                        'msg-specific-cb': self.do_msg_specific_cb,
                         'server-req': self.do_server_req,
                         'extra-hdr-fields': self.do_extra_hdr_fields,
                         'delayed-payload': self.do_delayad_payload,
diff --git a/src/testdir/test_cmdmods.vim b/src/testdir/test_cmdmods.vim
index eb6dff1..d5a4e93 100644
--- a/src/testdir/test_cmdmods.vim
+++ b/src/testdir/test_cmdmods.vim
@@ -1,4 +1,4 @@
-" Test for all comand modifiers in 
+" Test for all command modifiers in
 
 def Test_cmdmods_array()
   # Get all the command modifiers from ex_cmds.h.
diff --git a/src/testdir/test_expr.vim b/src/testdir/test_expr.vim
index e1fed36..6d6efe7 100644
--- a/src/testdir/test_expr.vim
+++ b/src/testdir/test_expr.vim
@@ -35,7 +35,7 @@
   call assert_true(has('patch-6.9.999'))
   call assert_true(has('patch-7.1.999'))
   call assert_true(has('patch-7.4.123'))
-  call assert_true(has('patch-7.4.123 ')) " Traling space can be allowed.
+  call assert_true(has('patch-7.4.123 ')) " Trailing space can be allowed.
 
   call assert_false(has('patch-7'))
   call assert_false(has('patch-7.4'))
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index 9b8cd73..e22ede9 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1342,7 +1342,7 @@
 
 " Test for merging two recursive folds when an intermediate line with no fold
 " is removed
-func Test_fold_merge_recrusive()
+func Test_fold_merge_recursive()
   new
   call setline(1, ['  one', '    two', 'xxxx', '    three',
         \ '      four', "\tfive"])
diff --git a/src/testdir/test_langmap.vim b/src/testdir/test_langmap.vim
index 2284704..aaed77e 100644
--- a/src/testdir/test_langmap.vim
+++ b/src/testdir/test_langmap.vim
@@ -52,7 +52,7 @@
   set langmap=RL
   let g:counter = 0
   nnoremap L;L <Cmd>let g:counter += 1<CR>
-  nnoremap <C-L> <Cmd>throw 'This mapping shoud not be triggered'<CR>
+  nnoremap <C-L> <Cmd>throw 'This mapping should not be triggered'<CR>
 
   " 'langmap' is applied to keys without modifiers when matching a mapping
   call feedkeys('R;R', 'tx')
diff --git a/src/testdir/test_map_functions.vim b/src/testdir/test_map_functions.vim
index 5caf668..13e61f2 100644
--- a/src/testdir/test_map_functions.vim
+++ b/src/testdir/test_map_functions.vim
@@ -559,7 +559,7 @@
   assert_equal(len(maps_maplist), len(map_set))
 
   # For everything returned by maplist, should be the same as from maparg.
-  # Except for "map dup", bacause maparg returns the <buffer> version
+  # Except for "map dup", because maparg returns the <buffer> version
   for d in maps_maplist
     if d.lhs == 'dup' && d.buffer == 0
       continue
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index 102502e..23c4077 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -274,7 +274,7 @@
   call feedkeys(":setglobal di\<C-A>\<C-B>\"\<CR>", 'tx')
   call assert_equal('"setglobal dictionary diff diffexpr diffopt digraph directory display', @:)
 
-  " Expand boolan options. When doing :set no<Tab>
+  " Expand boolean options. When doing :set no<Tab>
   " vim displays the options names without "no" but completion uses "no...".
   call feedkeys(":set nodi\<C-A>\<C-B>\"\<CR>", 'tx')
   call assert_equal('"set nodiff digraph', @:)
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 29b7b7d..0f7f18c9 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -4124,8 +4124,8 @@
           fixed: false,
           })
   END
-  call writefile(lines, 'XtestPropNotVisble', 'D')
-  let buf = RunVimInTerminal('-S XtestPropNotVisble', #{rows: 10})
+  call writefile(lines, 'XtestPropNotVisible', 'D')
+  let buf = RunVimInTerminal('-S XtestPropNotVisible', #{rows: 10})
   call VerifyScreenDump(buf, 'Test_popup_prop_not_visible_01', {})
 
   " check that hiding and unhiding the popup works
diff --git a/src/testdir/test_termcodes.vim b/src/testdir/test_termcodes.vim
index 0b2365e..8715ebf 100644
--- a/src/testdir/test_termcodes.vim
+++ b/src/testdir/test_termcodes.vim
@@ -1222,7 +1222,7 @@
   call assert_equal(5, col("'<"))
   call assert_equal(12, col("'>"))
 
-  " Multi-line selection. Right click inside thse selection.
+  " Multi-line selection. Right click inside the selection.
   call setline(1, repeat(['aaaaaa'], 7))
   call test_setmouse(3, 1)
   exe "normal ggVG\<RightMouse>y"
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index 80ad88c..7ec5998 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -1896,7 +1896,7 @@
   try
     :2 del
   catch
-    assert_report('Line delete should have workd, but it raised an error.')
+    assert_report('Line delete should have worked, but it raised an error.')
   endtry
 
   # The property for line 2 (was 3) should no longer extend into the previous
@@ -1910,7 +1910,7 @@
   try
     :3 del
   catch
-    assert_report('Line delete should have workd, but it raised an error.')
+    assert_report('Line delete should have worked, but it raised an error.')
   endtry
 
   # The property for line 2 (originally 3) should no longer extend into the next
@@ -2405,7 +2405,7 @@
   exec 'setlocal fileformat=' . a:ff
 
   " Fill the buffer with varying length lines. We need a suitably large number
-  " to force Vim code through paths wehere previous error have occurred. This
+  " to force Vim code through paths where previous error have occurred. This
   " is more 'art' than 'science'.
   let text = 'a'
   call setline(1, text)
@@ -2448,7 +2448,7 @@
   setlocal fileformat=unix
 
   " Fill the buffer with varying length lines. We need a suitably large number
-  " to force Vim code through paths wehere previous error have occurred. This
+  " to force Vim code through paths where previous error have occurred. This
   " is more 'art' than 'science'.
   let text = 'aa'
   call setline(1, text)
diff --git a/src/testdir/test_vim9_cmd.vim b/src/testdir/test_vim9_cmd.vim
index 4e89c7f..0fe6e7c 100644
--- a/src/testdir/test_vim9_cmd.vim
+++ b/src/testdir/test_vim9_cmd.vim
@@ -126,7 +126,7 @@
   END
   v9.CheckScriptSuccess(lines)
 
-  # "legacy" does not aply to a called function
+  # "legacy" does not apply to a called function
   lines =<< trim END
       vim9script
 
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 58e214c..ac86512 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -4366,7 +4366,7 @@
   g:StopVimInTerminal(buf)
 enddef
 
-def Test_ambigous_command_error()
+def Test_ambiguous_command_error()
   var lines =<< trim END
       vim9script
       command CmdA echomsg 'CmdA'
diff --git a/src/testdir/test_vimscript.vim b/src/testdir/test_vimscript.vim
index 1d71450..4aa6bca 100644
--- a/src/testdir/test_vimscript.vim
+++ b/src/testdir/test_vimscript.vim
@@ -6882,7 +6882,7 @@
 "	    Undefined behavior was detected by ubsan with line continuation
 "	    after an empty line.
 "-------------------------------------------------------------------------------
-func Test_script_emty_line_continuation()
+func Test_script_empty_line_continuation()
 
     \
 endfunc
diff --git a/src/testdir/test_visual.vim b/src/testdir/test_visual.vim
index c6f80aa..573a2cf 100644
--- a/src/testdir/test_visual.vim
+++ b/src/testdir/test_visual.vim
@@ -1289,7 +1289,7 @@
 endfunc
 
 func Test_visual_block_ctrl_w_f()
-  " Emtpy block selected in new buffer should not result in an error.
+  " Empty block selected in new buffer should not result in an error.
   au! BufNew foo sil norm f
   edit foo
 
diff --git a/src/testdir/test_winbar.vim b/src/testdir/test_winbar.vim
index b946bcd..954c3e0 100644
--- a/src/testdir/test_winbar.vim
+++ b/src/testdir/test_winbar.vim
@@ -132,8 +132,8 @@
       wincmd j
       wincmd _
   END
-  call writefile(lines, 'XtestWinbarNotVisble', 'D')
-  let buf = RunVimInTerminal('-S XtestWinbarNotVisble', #{rows: 10})
+  call writefile(lines, 'XtestWinbarNotVisible', 'D')
+  let buf = RunVimInTerminal('-S XtestWinbarNotVisible', #{rows: 10})
   call VerifyScreenDump(buf, 'Test_winbar_not_visible', {})
 
   " clean up
@@ -151,8 +151,8 @@
       wincmd j
       wincmd _
   END
-  call writefile(lines, 'XtestWinbarNotVisble', 'D')
-  let buf = RunVimInTerminal('-S XtestWinbarNotVisble', #{rows: 10})
+  call writefile(lines, 'XtestWinbarNotVisible', 'D')
+  let buf = RunVimInTerminal('-S XtestWinbarNotVisible', #{rows: 10})
   call VerifyScreenDump(buf, 'Test_winbar_not_visible_custom_statusline', {})
 
   " clean up
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
index 0d4c278..7aecb92 100644
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -1267,7 +1267,7 @@
 
 " Test for jumping to a vertical/horizontal neighbor window based on the
 " current cursor position
-func Test_window_goto_neightbor()
+func Test_window_goto_neighbor()
   %bw!
 
   " Vertical window movement