diff --git a/src/vocabulary.ts b/src/vocabulary.ts
index d9ee44f..14a5512 100644
--- a/src/vocabulary.ts
+++ b/src/vocabulary.ts
@@ -256,6 +256,7 @@ export const items = [
 	'NaN',
 	'[object Object]',
 	'ゼロ幅スペース',
+	'全角スペース',
 ];
 
 export const and = [