費盡心思 Save Sign in to save words Simplified: 费尽心思 fèijìnxīnsi ㄈㄟˋ ㄐㄧㄣˋ ㄒㄧㄣ ˙ㄙ to rack one's brains (idiom) to take great pains to think sth through Character by character 費(fèi)surname Fei 盡(jìn)use up 心(xīn)heart 思(si)think A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0