肝心かんじん
kanjin

Noun
na-Adjective
no-Adjective

1. essential; important; crucial; vital; main

なんであれ物事ものごと本体ほんたいらえること肝心かんじんだ。
nandeare monogotono hontaio toraeru kotoga kanjinda.
No matter what the problem is, it's essential to get at the heart of the matter.
Other forms: