<p><strong>Adjective</strong></p><ul><li>without value, effect, consequence, or significance</li><li>being or amounting to nothing</li><li>nil</li><li>lacking</li><li>nonexistent</li><li>(of a set) empty</li><li>of measure zero</li><li>being or amounting to zero</li></ul><p><strong>Noun</strong></p><ul><li>a point of minimum signal reception, as on a radio direction finder or other electronic meter</li></ul><p><strong>Verb</strong></p><ul><li>to cancel</li><li>make null</li></ul>