noun, takes する, intransitive verb

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

Variations

Pronunciation Kanji Kana Is Common
腐心 ふしん

Contained Kanji Breakdown

rot, decay, sour
くさ.る フ (7th, N1)
borough, urban prefecture, govt office
フ い う (4th, N2)
dotted cliff radical (no. 53)
ゲン (Kentei 1)
wild goose, trailing cliff radical (no. 27)
カン かりがね (Kentei 1)
adhere, attach, refer to
つ.ける フ -づけ (4th, N3)
human radical (no. 9)
measurement, tenth of a shaku, a little
スン す みき (6th, N1)
meat
ニク しし (2nd, N4)
inside, within, between
ナイ うち ダイ (2nd, N3)
upside-down box radical (no. 13)
キョウ ケイ (Kentei 1)
person
ひと ニン ジン (1st, N5)
heart, mind, spirit
こころ シン (2nd, N4)