冥思苦索 míngsīkǔsuǒ to rack one's brains Origin Definitions Defs Strokes Stroke Words Sentences Sents 冥思 míngsī to contemplate to think deeply or reflect profoundly; to ponder over and over苦 kǔ adjectiveadverb painstakingly with great effort, persistence, or patience索 suǒ verbnoun to search to search for; to look for; to explore or seek out a solution or answer