diff --git a/README.md b/README.md
index 5c0dab8..b2004fc 100644
--- a/README.md
+++ b/README.md
@@ -20,11 +20,12 @@ and a GTK 3 module.
 
 Only a plain `Ctrl` chord is a strans key: with `Shift`, `Alt` or `Super`
 held it commits what is pending and goes to the application, so
-`Ctrl+Shift+V` still pastes. The mode switched to — `한`, `あ`, `ア`, `ă`,
-`A` — shows in the popup until the next key. A Korean keyboard's 한/영 and
-한자 keys stand for `Ctrl+S`/`Ctrl+T` and `Ctrl+H`; a Japanese one's
-半角/全角, ひらがな/カタカナ, 変換 and 無変換 for the kana modes, `Space`
-and English.
+`Ctrl+Shift+V` still pastes. `Backspace`, `Enter`, `Tab`, `Esc` and the
+arrow and page keys do the same under `Ctrl`, so `Ctrl+Backspace` still
+deletes a word. The mode switched to — `한`, `あ`, `ア`, `ă`, `A` — shows
+in the popup until the next key. A Korean keyboard's 한/영 and 한자 keys
+stand for `Ctrl+S`/`Ctrl+T` and `Ctrl+H`; a Japanese one's 半角/全角,
+ひらがな/カタカナ, 変換 and 無変換 for the kana modes, `Space` and English.
 
 ## Composing
 
diff --git a/strans.c b/strans.c
index 8d15ca0..1c17ada 100644
--- a/strans.c
+++ b/strans.c
@@ -842,6 +842,11 @@ transition(u32int ks, u32int mod, Str *com)
 		break;
 	case Kmuhenkan:	ks = 't'; mod = Mctrl; break;
 	}
+	/* Ctrl+Backspace deletes a word, Ctrl+Tab changes tab: not ours. */
+	if(ks >= Kspec && (mod & ~Mshift)){
+		flush(com);
+		return 0;
+	}
 	if(search.lang)
 		return searchkey(ks, mod, com);
 	n = movedelta(ks);
diff --git a/tests/engine_test.c b/tests/engine_test.c
index cba9afa..3532577 100644
--- a/tests/engine_test.c
+++ b/tests/engine_test.c
@@ -574,6 +574,15 @@ engine_korean_modifiers_and_backspace(struct ct *t)
 		CT_EQ_INT(t, 0, im.pre.n);
 		CT_CHECK(t, !keystroke(Kback, 0, &com));
 	}
+
+	init();
+	im.l = getlang(LangKO);
+	sclear(&com);
+	if(typekeys(t, "rk", &com)){
+		CT_CHECK(t, !keystroke(Kback, Mctrl, &com));
+		checkstr(t, "Ctrl+Backspace commits and passes", "가", &com);
+		CT_EQ_INT(t, 0, im.pre.n);
+	}
 }
 
 void