Green’s Dictionary of Slang

nix adv.

also nixy
[nix n.]

no, certainly not, not at all.

[US]‘Johnny Cross’ ‘Down Near The Battery ’ in Orig. Pontoon Songster 41: Hail Columbia in the garret, Yankee Doodle shouta, / By and by there comes a policeman, and he nix can fetch him outa.
[US]Dly Dispatch (Richmond, VA) 1 Nov. 3/3: ‘Well,’ said the detective, ‘I guess I had better “nixy weeden cull”, or stop talking slang.
[UK]J. Greenwood Tag, Rag & Co. 43: Had the stave suggested been [...] ‘Nix, my dolly pals’.
[US]Sun (NY) 14 Jan. 6/2: ‘Nixy,’ says I.
[UK]A. Binstead Pitcher in Paradise 204: Of what use is it to try and reason with such people? None — nix absolutely.
[US]H. Green Actors’ Boarding House (1906) 360: I ast for the first floor front, an’ you said nix, but you let a coupla dopes have it.
[US]News & Courier (Charleston, SC) 14 Apr. 18/1: I pushed a couple of sinkers into my chops but nix on the Mocha.
E. Rosen In the Foreign Legion 41: ‘Nix good. D—n bad!’.
[US]‘Hugh McHugh’ You Should Worry cap. 3: A perpetual reception committee to a frowsy-headed Slavonian exile demanding $35 per and nix on the washing.
[US]E. O’Neill Anna Christie Act I: On board your barge, you mean? Nix for mine!
[US]D. Burley N.Y. Amsterdam News 12 Feb. 7/1: Mrs Maceo Pinckard says nix to most vistors to ill hubby’s bedside.
[UK]K. Amis letter 16 Jan. in Leader (2000) 16: The conversation was limited to ‘Cognac, ah! Nix good’.
[SA]A. La Guma Walk in the Night (1968) 68: You don’t have to worry niks, Mikey. We okay. We don’t give an eff for the law.
[US]B. Jackson Get Your Ass in the Water (1974) 82: But the guard said, ‘Nix,’ that he was on to all the tricks.