苦心 (Kushin) is a Japanese noun meaning “pains, hard work, effort, trouble”.
Meanings
- noun, suru verb, intransitive verbpains; hard work; effort; trouble; labour; labor
Examples
苦心の甲斐があった。
That was well worth the trouble.
その歌手はファンの群がる中を苦心して進んだ。
The singer fought his way through the crowd of fans.
Sentences from Tatoeba (CC BY 2.0 FR).