不光彩 bùguāngcǎi disgraceful Origin Definitions Defs 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光彩 guāngcǎi honorable honorable; glorious; bringing credit to one's reputation