肝心, 肝腎, かんじん
NA-adjective, May take 'no'
essential, important, crucial, vital, main
なんであれ物事の本体を捕らえる事が肝心だ。
なの
Expression, Female term or language, Colloquialism, at sentence-end with falling intonation; used to make an assertion
1. that's the way it is, yes
at sentence-end with rising intonation
2. is that so?, is it?
母は私がアルバイトをすることに反対なの。
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
それで, 其れで
Conjunction, Usually in kana
so, therefore, and, (and) then
雨がひどく降ってきた、それで私たちは屋内で遊んだ。