苦心 kǔxīn HSK7 effort Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: All meanings (2) All meanings 1 kǔxīn effort painstaking 1 sentence 他为了写好这本书，真是煞费苦心。 tā wèile xiě hǎo zhè běn shū, zhēn shì shàfèikǔxīn. He took great pains to write this book well. Source: Dong Chinese Dictionary