This is the 1878th most frequent Dutch word.
niks
Nothing.
Here 'niks' is used as an indefinite pronoun meaning 'nothing', indicating the absence of things to do.
Ik heb niks om te doen vandaag.
I have nothing to do today.
In this case, 'niks' acts as an adverbial pronoun to emphasize lack of concern or importance.
Hij zegt dat het hem niks kan schelen.
He says that he does not care about it.
Here, 'niks' is a colloquial synonym for 'geen aandacht'/'no attention', denoting lack of consideration.