素昧平生 sùmèipíngshēng to have never met Origin Definitions Defs Strokes Stroke Words Sentences Sents 素 sù adjectiveverb usually usually; habitually; always; according to one's long-standing practice昧 mèi unacquainted (bound form) not knowing a person; unfamiliar with.平生 píngshēng one's entire life all one's life; from birth until the present moment