すまなんじゃダメ【
済まなんじゃダメ
】

sumana nja dame

i-Adjective

,

Interjection

A casual prohibition ("not allowed to...") of すまない

1. Don't do that.; Don't allow that.; It's not permissible.

Casual Register

,

Prohibition

,

Colloquial

,

Usually Written in Kana