苦く節せつ

noun

unremitting effort; dogged perseverance; unswerving loyalty

Emphasizes enduring hardship or adversity while maintaining steadfast effort or loyalty. Often used in formal or literary contexts to praise someone's long-term dedication.

• 彼かれは苦く節せつ十じゅう年ねん、ついに夢ゆめを叶かなえた。

  After ten years of unremitting effort, he finally achieved his dream.

• 苦く節せつを重かさねて研けん究きゅうを続つづけた。

  He continued his research with dogged perseverance.