If you nix a plan or suggestion, you reject or forbid it.
[US, informal]
It only took a few minutes for me to nix this proposal.
nix in British English1
(nɪks) US and Canadian informal
sentence substitute
1. another word for no1 (sense 1)
2.
be careful! watch out!
noun
3.
a rejection or refusal
4.
nothing at all
verb
5. (transitive)
to veto, deny, reject, or forbid (plans, suggestions, etc)
Word origin
C18: from German, colloquial form of nichts nothing
nix in British English2
or nixe (nɪks)
noun
German mythology
a male water sprite, usually unfriendly to humans
Word origin
C19: from German Nixe nymph or water spirit, from Old High German nihhus; related to Old English nicor sea monster
nix in American English1
(nɪks)
nounWord forms: pluralˈnixes or ˈnixe (ˈnɪksə)
German Mythology
a water sprite, usually small and of human or partly human form
Word origin
Ger nix, masc., nixe, fem. < OHG nihhus, sea beast, nicchussa, water sprite, akin to OE nicor, ON nykr, water sprite < Gmc *nik-, *nikwus-, water spirit < IE base *neigw-, to wash > Sans nḗnēkti, (he) washes