悉心毕力 xīxīnbìlì to do one's utmost Origin Definitions Defs Strokes Stroke Words Sentences Sents 悉心 xīxīn with utmost care to put one's heart and soul into something; with great care; devotedly毕 畢 bì adverb fully (bound form) fully; altogether; completely力 lì noun strength physical strength; power; might