diff --git a/Lib/ctypes/test/test_numbers.py b/Lib/ctypes/test/test_numbers.py
index d623465..ec42e96 100644
--- a/Lib/ctypes/test/test_numbers.py
+++ b/Lib/ctypes/test/test_numbers.py
@@ -76,7 +76,7 @@
             self.assertEqual(t(v).value, truth(v))
 
     def test_typeerror(self):
-        # Only numbers are allowed in the contructor,
+        # Only numbers are allowed in the constructor,
         # otherwise TypeError is raised
         for t in signed_types + unsigned_types + float_types:
             self.assertRaises(TypeError, t, "")
diff --git a/Lib/ctypes/test/test_structures.py b/Lib/ctypes/test/test_structures.py
index f983a6b..5650189 100644
--- a/Lib/ctypes/test/test_structures.py
+++ b/Lib/ctypes/test/test_structures.py
@@ -106,7 +106,7 @@
         self.assertEqual(alignment(XX), alignment(X))
         self.assertEqual(sizeof(XX), calcsize("3s 3s 0s"))
 
-    def test_emtpy(self):
+    def test_empty(self):
         # I had problems with these
         #
         # Although these are pathological cases: Empty Structures!
diff --git a/Lib/idlelib/CallTipWindow.py b/Lib/idlelib/CallTipWindow.py
index 90c2d7c..e63164b 100644
--- a/Lib/idlelib/CallTipWindow.py
+++ b/Lib/idlelib/CallTipWindow.py
@@ -9,7 +9,7 @@
 HIDE_SEQUENCES = ("<Key-Escape>", "<FocusOut>")
 CHECKHIDE_VIRTUAL_EVENT_NAME = "<<calltipwindow-checkhide>>"
 CHECKHIDE_SEQUENCES = ("<KeyRelease>", "<ButtonRelease>")
-CHECKHIDE_TIME = 100 # miliseconds
+CHECKHIDE_TIME = 100 # milliseconds
 
 MARK_RIGHT = "calltipwindowregion_right"
 
diff --git a/Lib/idlelib/ParenMatch.py b/Lib/idlelib/ParenMatch.py
index 19bad8c..47e10f3 100644
--- a/Lib/idlelib/ParenMatch.py
+++ b/Lib/idlelib/ParenMatch.py
@@ -9,7 +9,7 @@
 from idlelib.configHandler import idleConf
 
 _openers = {')':'(',']':'[','}':'{'}
-CHECK_DELAY = 100 # miliseconds
+CHECK_DELAY = 100 # milliseconds
 
 class ParenMatch:
     """Highlight matching parentheses
diff --git a/Lib/platform.py b/Lib/platform.py
index 63455ce..6e264f1 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -63,7 +63,7 @@
 #            though
 #    0.5.2 - fixed uname() to return '' instead of 'unknown' in all
 #            return values (the system uname command tends to return
-#            'unknown' instead of just leaving the field emtpy)
+#            'unknown' instead of just leaving the field empty)
 #    0.5.1 - included code for slackware dist; added exception handlers
 #            to cover up situations where platforms don't have os.popen
 #            (e.g. Mac) or fail on socket.gethostname(); fixed libc
diff --git a/Lib/test/test_cookielib.py b/Lib/test/test_cookielib.py
index 5182bc0..f2dd972 100644
--- a/Lib/test/test_cookielib.py
+++ b/Lib/test/test_cookielib.py
@@ -346,7 +346,7 @@
 ##   comma-separated list, it'll be a headache to parse (at least my head
 ##   starts hurting every time I think of that code).
 ## - Expires: You'll get all sorts of date formats in the expires,
-##   including emtpy expires attributes ("expires="). Be as flexible as you
+##   including empty expires attributes ("expires="). Be as flexible as you
 ##   can, and certainly don't expect the weekday to be there; if you can't
 ##   parse it, just ignore it and pretend it's a session cookie.
 ## - Domain-matching: Netscape uses the 2-dot rule for _all_ domains, not
diff --git a/Lib/test/test_deque.py b/Lib/test/test_deque.py
index 3e88168..c81064d 100644
--- a/Lib/test/test_deque.py
+++ b/Lib/test/test_deque.py
@@ -329,7 +329,7 @@
         d.clear()
         self.assertEqual(len(d), 0)
         self.assertEqual(list(d), [])
-        d.clear()               # clear an emtpy deque
+        d.clear()               # clear an empty deque
         self.assertEqual(list(d), [])
 
     def test_remove(self):
diff --git a/Lib/test/test_structseq.py b/Lib/test/test_structseq.py
index daa12aa..75861fe 100644
--- a/Lib/test/test_structseq.py
+++ b/Lib/test/test_structseq.py
@@ -88,7 +88,7 @@
         class Exc(Exception):
             pass
 
-        # Devious code could crash structseqs' contructors
+        # Devious code could crash structseqs' constructors
         class C:
             def __getitem__(self, i):
                 raise Exc
diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index 0c23c96..8f46101 100644
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -529,7 +529,7 @@
            between the two objects is more than the given delta.
 
            Note that decimal places (from zero) are usually not the same
-           as significant digits (measured from the most signficant digit).
+           as significant digits (measured from the most significant digit).
 
            If the two objects compare equal then they will automatically
            compare almost equal.
@@ -567,7 +567,7 @@
            between the two objects is less than the given delta.
 
            Note that decimal places (from zero) are usually not the same
-           as significant digits (measured from the most signficant digit).
+           as significant digits (measured from the most significant digit).
 
            Objects that are equal automatically fail.
         """