Expressions (phrases, clauses, etc.)
cannot do without something; indispensable; absolutely necessary
Usually written using kana alone
君はもう大人なんだから、もっと分別がなくてはいけない。Now that you are grown-up, you ought to know better. have to do
Usually written using kana aloneafter negative base of verb
13 results for なくてはいけない
Passage breakdown
1 partSentences
All 12不時にそなえなくてはいけない。
You should be prepared for emergencies.
栗は少なくとも15分は茹でなくてはいけない。
Chestnuts have to be boiled for at least fifteen minutes.
自信過剰にならないよう注意しなくてはいけない。
You should beware of overconfidence.