成人 chéngrén HSK4 adult Origin Definitions Defs Strokes Stroke Words Sentences Sents chéngrén adult · perfect person 成 chéng nounadjective mature (bound form) fully developed; grown; mature人 rén noun person person; people; human being; a humanchéngrén to grow up · to become successful · to lose virginity 成 chéng verbparticle to become to become; to turn into; to change into人 rén noun person person; people; human being; a human