费尽心机 fèijìnxīnjī to rack one's brains Origin Definitions Defs Strokes Stroke Words Sentences Sents 费 費 fèi verb to exert to use or consume effort, time, or energy尽 盡 jìn verb to use up to use up; to exhaust; to finish; to end心机 心機 xīnjī scheming thinking or planning, often with a hidden agenda; calculating; scheming; resourcefulness