diff --git a/docs/sudo_plugin_python.man.in b/docs/sudo_plugin_python.man.in
index 9410271ee..e77e96cb2 100644
--- a/docs/sudo_plugin_python.man.in
+++ b/docs/sudo_plugin_python.man.in
@@ -94,7 +94,7 @@ The customized Plugin class should define a few plugin-specific methods.
 When the plugin loads,
 \fBsudo\fR
 will create an instance of this class and call the methods.
-The actual methods required depent on the type of the plugin,
+The actual methods required depend on the type of the plugin,
 but most return an
 \fIint\fR
 result code, as documented in
diff --git a/docs/sudo_plugin_python.mdoc.in b/docs/sudo_plugin_python.mdoc.in
index 49299eabc..f6edd470e 100644
--- a/docs/sudo_plugin_python.mdoc.in
+++ b/docs/sudo_plugin_python.mdoc.in
@@ -83,7 +83,7 @@ The customized Plugin class should define a few plugin-specific methods.
 When the plugin loads,
 .Nm sudo
 will create an instance of this class and call the methods.
-The actual methods required depent on the type of the plugin,
+The actual methods required depend on the type of the plugin,
 but most return an
 .Vt int
 result code, as documented in
diff --git a/etc/codespell.exclude b/etc/codespell.exclude
index 2c1f54ff8..b89f656b3 100644
--- a/etc/codespell.exclude
+++ b/etc/codespell.exclude
@@ -32,3 +32,4 @@
  * If path doesn't end in /, return true iff cmnd & path name the same inode;
  *	Tim Fraser
 	    echo ".Nd sudo" >> conftest
+ * as per FIPS 180-4: Secure Hash Standard (SHS)
diff --git a/etc/codespell.ignore b/etc/codespell.ignore
index d242e622e..acf70b0d9 100644
--- a/etc/codespell.ignore
+++ b/etc/codespell.ignore
@@ -1,16 +1,19 @@
 SOM
 VAS
 alloced
+anull
+clen
 edn
 fIDN
+fpt
 ist
+nome
 numer
 pleas
 sav
+siz
 statics
 thur
 toke
 vas
 wit
-siz
-clen
diff --git a/plugins/sudoers/getdate.c b/plugins/sudoers/getdate.c
index 0f06b466c..bb01d1026 100644
--- a/plugins/sudoers/getdate.c
+++ b/plugins/sudoers/getdate.c
@@ -1976,7 +1976,7 @@ static TABLE const TimezoneTable[] = {
 #endif
     { "zp6",	tZONE,     -HOUR(6) },	/* USSR Zone 5 */
 #if	0
-    /* For completeness.  NST is also Newfoundland Stanard, and SST is
+    /* For completeness.  NST is also Newfoundland Standard, and SST is
      * also Swedish Summer. */
     { "nst",	tZONE,     -HOUR(6.5) },/* North Sumatra */
     { "sst",	tZONE,     -HOUR(7) },	/* South Sumatra, USSR Zone 6 */
diff --git a/plugins/sudoers/getdate.y b/plugins/sudoers/getdate.y
index 1e3893c99..f1406112f 100644
--- a/plugins/sudoers/getdate.y
+++ b/plugins/sudoers/getdate.y
@@ -442,7 +442,7 @@ static TABLE const TimezoneTable[] = {
 #endif
     { "zp6",	tZONE,     -HOUR(6) },	/* USSR Zone 5 */
 #if	0
-    /* For completeness.  NST is also Newfoundland Stanard, and SST is
+    /* For completeness.  NST is also Newfoundland Standard, and SST is
      * also Swedish Summer. */
     { "nst",	tZONE,     -HOUR(6.5) },/* North Sumatra */
     { "sst",	tZONE,     -HOUR(7) },	/* South Sumatra, USSR Zone 6 */
diff --git a/plugins/sudoers/pivot.c b/plugins/sudoers/pivot.c
index b7a01356e..b314779a9 100644
--- a/plugins/sudoers/pivot.c
+++ b/plugins/sudoers/pivot.c
@@ -68,7 +68,7 @@ unpivot_root(int fds[2])
     bool ret = true;
     debug_decl(unpivot_root, SUDOERS_DEBUG_UTIL);
 
-    /* Order is imporant: restore old root, *then* change cwd. */
+    /* Order is important: restore old root, *then* change cwd. */
     if (fds[OLD_ROOT] != -1) {
 	if (fchdir(fds[OLD_ROOT]) == -1 || chroot(".") == -1) {
 	    sudo_warn("%s", U_("unable to restore root directory"));
diff --git a/plugins/sudoers/visudo.c b/plugins/sudoers/visudo.c
index 085c08477..d1eca6cbf 100644
--- a/plugins/sudoers/visudo.c
+++ b/plugins/sudoers/visudo.c
@@ -922,7 +922,7 @@ run_command(const char *path, char *const *argv)
 	     * process.  There is a race between the parent's call to
 	     * tcsetpgrp() and the child's execve().  If the parent loses
 	     * the race, the child will be stopped with SIGTTOU or SIGTTIN
-	     * and be restarted immeditately.
+	     * and be restarted immediately.
 	     */
 	    if (setpgid(0, 0) == -1) {
 		sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_ERRNO,