What does vanvid which is danish mean in English?

There is no Danish word "vanvid". It's possible there is a misspelling or you're thinking of a different language.

Could you please double-check the word and provide any context? Perhaps you're thinking of:

* Vanvid: This is a Danish word, but it's a noun meaning "madness" or "insanity". It's not a common word, but it's used in some literary contexts.

* Vanvittig: This is a Danish word, and it's an adjective meaning "crazy", "wild", or "insane".

Please clarify the word you're looking for, and I'll be happy to help!