Ich untersage Ihnen ~! – “I forbid you to ___!” in German | MotiTan Dictionary

Meaning

I forbid you to ___!

When to use it

It formally bans the action. The tone is calm, formal, and firmly rejecting.

Example dialogue

Ich untersage Ihnen Fotos zu machen!

I forbid you to take photos!

Entschuldigen Sie, das wusste ich nicht; ich mache keine Fotos mehr.

I'm sorry, I didn't know that; I won't take any more photos.