不匮 bùkuì inexhaustible 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匮 匱 kuì adjective to lack (bound form) to lack; lacking; empty or exhausted