腐ふ心しん

noun, noun or participle which takes 'suru', intransitive verb

take great pains; rack one's brains; make every effort

Describes putting intense mental effort into something, often with a sense of struggling or worrying over it. Commonly used in the pattern 〜に腐心する.

• 彼かれは問もん題だいの解かい決けつに腐ふ心しんしている。

  He is racking his brains to solve the problem.

• 新