腐心

ふしんfushin

noun · suru verb · intransitive

  1. taking great pains (to do)
  2. making every effort
  3. having a lot of trouble (doing)
  4. racking one's brains

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences