不管用 bùguǎnyòng useless Definitions Defs Origin Strokes Stroke Words Sentences Sents 不 bù adverb not Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings管用 guǎnyòng adjective effective efficacious; useful; able to produce the desired result
