任劳任怨任劳任怨[rèn láo rèn yuàn]1.■bear hardship without complaint; bear responsibility without grudge; bear up under affliction; devote oneself to duty wholeheartedly and without complaint; do everything uncomplainingly; fulfill one's duties faithfully and energetically; hardworking and uncomplaining; willingly to bear the burden of office; work hard and not be upset by criticism; work hard without complaint; work uncomplainingly and selflessly