"Du får inte vara sur hela festen."

Translation: You may not be grumpy the entire party.

[ilmolleggi]

Does this mean "I forbid you - you're not allowed" or is it a compaint as in "come on!! you've been grumpy this whole time!! You cannot go on being grumpy the whole evening!"? Or could it be both?

[devalanteriel]

Either, I suppose, but the latter is way more likely. How would you forbid someone from feeling something? :)

[ilmolleggi]

Well you can forbid them to come if they act a certain way: "you're not allowed to (come if you) feel (and act) grumpy"...

Anyway my doubt was if the second could apply too, so thanks for your answer :)

[devalanteriel]

I think in that case I'd be explicit and say that, just like in English. :)

[Beanybadger]

I was imagining a strict, rich 'gammaldags' mother telling their naughty child that they had to be on their best behaviour and not be grumpy for the entire party

[Nezer5]

Why they are not allowed to be grumpy the entire party wasn't accepted

[devalanteriel]

• du = you
• de = they

[KevinDansk]

Why can't I use angry?

[devalanteriel]

"angry" is stronger than just "grumpy".

[EsperantoEddie]

Why isn't "you are not allowed to be grumpy the entire party" not accepted?

[devalanteriel]

That actually is accepted. If you were marked wrong for exactly that, you suffered a bug.