Put the kibosh on (3)

I think it could be either:

end

nix

'put the kibosh on' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for nix that I've seen before include "Cancel" , "water sprite" , "Nothing (sl.)" , "0" , "Spiteful water spirit" .)

I've seen this clue in the King Feature Syndicate, the USA Today, the LA Times, The New York Times and The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.