〜てはいけない
Formation
N5ObligationNeutral
Variations
ちゃいけない
Colloquial
じゃいけない
Colloquial
Meaning
Must not / Should not. Indicates a prohibition or regulation. In casual speech, contracted to ちゃいけない or じゃいけない.
Examples
ここで写真を撮ってはいけない。
You must not take photos here.
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