刻こっ苦く勉べん励れい

noun, noun or participle which takes 'suru'

hard work and perseverance; diligent effort through hardship

A yojijukugo describing the act of working diligently while enduring difficulties. Often used in formal or literary contexts to praise perseverance.

• 彼かれは刻こっ苦く勉べん励れいの末すえ、ついに難なん関かん資し格かくを取しゅ得とくした。

  After years of hard work and perseverance, he finally obtained the difficult certification.

• 刻こっ苦く勉べん励れいして研けん究きゅうを続つづけた結けっ果か、大おおきな発はっ見けんにつながった。

  As a result of diligently continuing the research while enduring hardships, it led to a major discovery.