<p><strong>Noun</strong></p><ul><li>nothing.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to veto; refuse to agree to; prohibit: The VP of Publishing nixed the project.</li></ul><p><strong>Adverb</strong></p><ul><li>no.</li></ul><p><strong>Interjection</strong></p><ul><li>Archaic. (used as an exclamation, especially of warning): Nix, the cops!</li></ul>