无所用心 wúsuǒyòngxīn to not give serious thought to anything Origin Definitions Defs Strokes Stroke Words Sentences Sents 饱食终日，无所用心 bǎoshízhōngrìwúsuǒyòngxīn to remain idle and do no work (idiom) To eat one's fill all day long and do no work; to be sated with food while having nothing to occupy one's mind.