diff --git a/INSTALL.md b/INSTALL.md
index e6a123138..b7f74fd99 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -320,7 +320,7 @@ Defaults are listed in brackets after the description.
         Adds the specified library (or libraries) to SUDO_LIBS and
         and VISUDO_LIBS so sudo will link against them.  If the
         library doesn't start with "-l" or end in ".a" or ".o" a
-        "-l" will be pre-pended to it.  Multiple libraries may be
+        "-l" will be prepended to it.  Multiple libraries may be
         specified as long as they are space separated.
 
     --with-libtool=PATH
diff --git a/etc/codespell.ignore b/etc/codespell.ignore
index 1b9cc1ba9..d242e622e 100644
--- a/etc/codespell.ignore
+++ b/etc/codespell.ignore
@@ -12,3 +12,5 @@ thur
 toke
 vas
 wit
+siz
+clen
diff --git a/lib/eventlog/eventlog.c b/lib/eventlog/eventlog.c
index 5494a0950..3d03294b9 100644
--- a/lib/eventlog/eventlog.c
+++ b/lib/eventlog/eventlog.c
@@ -1004,7 +1004,7 @@ bad:
 }
 
 /*
- * Log a message to syslog, pre-pending the username and splitting the
+ * Log a message to syslog, prepending the username and splitting the
  * message into parts if it is longer than syslog_maxlen.
  */
 static bool
diff --git a/plugins/group_file/getgrent.c b/plugins/group_file/getgrent.c
index 142fd39e1..efb74b25b 100644
--- a/plugins/group_file/getgrent.c
+++ b/plugins/group_file/getgrent.c
@@ -22,7 +22,7 @@
  */
 
 /*
- * Trivial replacements for the libc getgr{uid,nam}() routines.
+ * Trivial replacements for the libc getgrent() family of functions.
  */
 
 #include <config.h>
diff --git a/plugins/sudoers/cvtsudoers.c b/plugins/sudoers/cvtsudoers.c
index ca15cc906..a6f17e9c8 100644
--- a/plugins/sudoers/cvtsudoers.c
+++ b/plugins/sudoers/cvtsudoers.c
@@ -1384,7 +1384,7 @@ alias_prune_helper(struct sudoers_parse_tree *parse_tree, struct alias *a,
 {
     struct cvtsudoers_config *conf = v;
 
-    /* XXX - misue of these functions */
+    /* XXX - misuse of these functions */
     switch (a->type) {
     case USERALIAS:
 	userlist_matches_filter(parse_tree, &a->members, conf);
diff --git a/plugins/sudoers/tsgetgrpw.c b/plugins/sudoers/tsgetgrpw.c
index 27439e97b..481cb3370 100644
--- a/plugins/sudoers/tsgetgrpw.c
+++ b/plugins/sudoers/tsgetgrpw.c
@@ -23,8 +23,8 @@
  */
 
 /*
- * Trivial replacements for the libc get{gr,pw}{uid,nam}() routines
- * for use by testsudoers in the sudo test harness.
+ * Trivial replacements for the libc getgrent() and getpwent() family
+ * of functions for use by testsudoers in the sudo test harness.
  * We need our own since many platforms don't provide set{pw,gr}file().
  */
 
diff --git a/plugins/sudoers/tsgetgrpw.h b/plugins/sudoers/tsgetgrpw.h
index 62aa751c3..826189b39 100644
--- a/plugins/sudoers/tsgetgrpw.h
+++ b/plugins/sudoers/tsgetgrpw.h
@@ -17,8 +17,8 @@
  */
 
 /*
- * Trivial replacements for the libc get{gr,pw}{uid,nam}() routines
- * for use by testsudoers in the sudo test harness.
+ * Trivial replacements for the libc getgrent() and getpwent() family
+ * of functions for use by testsudoers in the sudo test harness.
  * We need our own since many platforms don't provide set{pw,gr}file().
  */
 
diff --git a/src/exec_nopty.c b/src/exec_nopty.c
index 690dca68b..bd91e3ae6 100644
--- a/src/exec_nopty.c
+++ b/src/exec_nopty.c
@@ -455,7 +455,7 @@ write_callback(int fd, int what, void *v)
 
 /*
  * If std{in,out,err} are not connected to a terminal, interpose
- * outselves using a pipe.  Fills in io_pipe[][].
+ * ourselves using a pipe.  Fills in io_pipe[][].
  */
 static void
 interpose_pipes(struct exec_closure *ec, int io_pipe[3][2])