言之凿凿 yánzhīzáozáo to speak with conviction Origin Definitions Defs Strokes Stroke Words Sentences Sents 言 yán verbadverb to say to speak; to talk; to state or tell之 zhī pronoun it Used only in the object position to refer to a person or thing already mentioned, meaning "him", "her", "it", or "them".凿 鑿 záo reduplication authentic (literary) certain; authentic; irrefutable, as in the word 确凿 quèzáo