切勿 qièwù be sure not to Origin Definitions Defs Strokes Stroke Words Sentences Sents 切 qiè verbadverb absolutely absolutely; definitely; used in the imperative to mean "must" or "must not"勿 wù adverbverb do not Used in formal or written contexts to express prohibition or advice, similar to 不要 bùyào or 别 bié.