出没无常 chūmòwúcháng to come and go unpredictably Origin Definitions Defs Strokes Stroke Words Sentences Sents 出没 出沒 chūmò to appear and disappear to come and go; to haunt or roam about, especially of criminals, ghosts, or wild animals无常 無常 wúcháng adjective changeable variable; fickle; inconstant; not having a regular pattern