大言不惭 dàyánbùcán to boast shamelessly Origin Definitions Defs Strokes Stroke Words Sentences Sents 大言 dàyán to boast to exaggerate; to speak boastfully or loudly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惭 慚 cán adjective ashamed (bound form) ashamed; feel regretful or humiliated