无用功 wúyònggōng useless effort Definitions Defs Origin Strokes Stroke Words Sentences Sents wúyònggōng useless effort 无用 無用 wúyòng adjective useless having no use; worthless or ineffective功 gōng verbnoun achievement achievement; result; success; a positive outcome from effortwúyònggōng wasted work 无用 無用 wúyòng adjective useless having no use; worthless or ineffective功 gōng noun work (physics) work; the product of force and displacement in the direction of the force