diff --git a/doc/arif_ctx_create.3 b/doc/arif_ctx_create.3
index d6d4395..fad30cb 100644
--- a/doc/arif_ctx_create.3
+++ b/doc/arif_ctx_create.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_ctx_create - create input context
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arif_ctx_destroy.3 b/doc/arif_ctx_destroy.3
index af78087..677fc97 100644
--- a/doc/arif_ctx_destroy.3
+++ b/doc/arif_ctx_destroy.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_ctx_destroy - destroy input context
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arif_fetch.3 b/doc/arif_fetch.3
index bb64c0d..105391b 100644
--- a/doc/arif_fetch.3
+++ b/doc/arif_fetch.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_fetch - fetch candidates
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arif_query.3 b/doc/arif_query.3
index eac0987..1c2e45f 100644
--- a/doc/arif_query.3
+++ b/doc/arif_query.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_query - query for candidates
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arif_rl_complete.3 b/doc/arif_rl_complete.3
index 777f958..1dc0389 100644
--- a/doc/arif_rl_complete.3
+++ b/doc/arif_rl_complete.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_rl_complete - generate Readline completion candidates
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif_rl.h>
 .PP
diff --git a/doc/arif_rl_display.3 b/doc/arif_rl_display.3
index 2e690d1..e3b162c 100644
--- a/doc/arif_rl_display.3
+++ b/doc/arif_rl_display.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_rl_display - display Readline completion candidates
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif_rl.h>
 .PP
diff --git a/doc/arif_select_page.3 b/doc/arif_select_page.3
index d4c7054..37f21e4 100644
--- a/doc/arif_select_page.3
+++ b/doc/arif_select_page.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_select_page - select the page of candidates
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arif_set_engine.3 b/doc/arif_set_engine.3
index e2b373a..acf4d28 100644
--- a/doc/arif_set_engine.3
+++ b/doc/arif_set_engine.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_set_engine - set input method engine
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif/arif.h>
 .PP
diff --git a/doc/arify.1 b/doc/arify.1
index 6a7f8c9..00fcd88 100644
--- a/doc/arify.1
+++ b/doc/arify.1
@@ -3,7 +3,7 @@
 .SH NAME
 arify - execute program with input methods
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .B arify
 .RI [ options ]
 .I pathname
@@ -28,7 +28,7 @@ Overrides the ARIFY_ENGINES environment variable with
 .IP
 If multiple
 .BR \-e
-options are provided, the resulting value is a concatentation of each
+options are provided, the resulting value is a concatenation of each
 .IR engines ,
 with an ASCII Space character as separator.
 .TP
diff --git a/examples/arif_rime.3 b/examples/arif_rime.3
index 227fef6..384dede 100644
--- a/examples/arif_rime.3
+++ b/examples/arif_rime.3
@@ -3,7 +3,7 @@
 .SH NAME
 arif_rime - example Rime IME integration for ARIF
 .
-.SH SYNOPSYS
+.SH SYNOPSIS
 .EX
 .B #include <arif_rime.h>
 .PP
diff --git a/src/arify_rl.c b/src/arify_rl.c
index 2b9a111..6cdff3d 100644
--- a/src/arify_rl.c
+++ b/src/arify_rl.c
@@ -111,7 +111,7 @@ complete (
 
 static void
 disable_arify (
-    bool supress_message
+    bool suppress_message
 ) {
     rl_basic_quote_characters          = rlctx.old_basic_quote_chars;
     rl_attempted_completion_function   = rlctx.old_comp_func;
@@ -121,7 +121,7 @@ disable_arify (
     rl_sort_completion_matches         = rlctx.old_sort_matches;
 
     rlctx.enabled = false;
-    if (!supress_message) {
+    if (!suppress_message) {
         rlprintf("%s", "[arify] disabled");
     }
     arify_debug_printf("%s", "disabled");