不吉 bùjí unlucky 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吉 jí nounadjective lucky (bound form) lucky; auspicious; propitious; the opposite of 凶 xiōng