对子 duìzi antithetical couplet Origin Definitions Defs Strokes Stroke Words Sentences Sents 对对子 duìduìzi to compose a couplet To provide a matching phrase or sentence that parallels a given one in rhythm and meaning to form a poetic couplet.结对子 jiéduìzi to pair up To form a cooperative relationship or pair up to learn from and help one another, as between organizations or individuals.