不擅 bùshàn not good at 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擅 shàn verb to be good at (bound form) to be good at; to be skilled in