颓波 tuíbō cascade Origin Definitions Defs Strokes Stroke Words Sentences Sents tuíbō cascade 颓 頹 tuí to set (of the sun) to set; to fall or descend波 bō nounverb wave (water) a wave or ripple on the surface of watertuíbō decline 颓 頹 tuí to decline (bound form) to decline; to decay; to become dilapidated or ruined波 bō [unexpected change] an unexpected turn of events or a sudden complication