无因 wúyīn without reason Definitions Defs Origin Strokes Stroke Words Sentences Sents wúyīn without reason 无 無 wú adjectiveverb to not have to not have; there is no; lack; (as prefix) non-; un-; -less因 yīn noun reason cause; reason; a factor or condition that produces a result, often contrasted with 果 guǒwúyīn unable to 无 無 wú adjectiveverb to not have to not have; there is no; lack; (as prefix) non-; un-; -less因 yīn (bound form) to rely on (bound form) to rely on; to depend on