N4verbte-formprohibition
てはいけない (te wa ikenai) - Must not
[Verb て] + はいけません
Quick answer
[Verb て] + はいけません means "Prohibition". As a N4 grammar point, it is tested in the JLPT. Detailed examples and a usage explanation are on this page.
Meaning
Prohibition
Explanation
てはいけない expresses strong prohibition.
Examples
Practice this grammar
[Verb て] + はいけません
Which sentence correctly uses "てはいけない (te wa ikenai) - Must not"?
Vocabulary from these examples
Last updated Jul 4, 2026