大言不惭大言不慚

dà yán bù cán

释义

to boast shamelessly; to talk big

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汉字

大dàbig, great, vast, high, deep一人言yánwords, speech; to speak, to say亠二口不bùno, not, un-; negative prefix一惭cánashamed, humiliated; shameful忄斩