莫须有 mòxūyǒu groundless Origin Definitions Defs Strokes Stroke Words Sentences Sents 莫 mò perhaps Used in patterns like 莫非 mòfēi to express a guess, doubt, or a rhetorical question须 須 xū auxiliary must must; have to; should有 yǒu verb there is there is; there are; to exist; to occur or happen