<p><strong>Verb</strong></p><ul><li>(used with object) to deny the existence, evidence, or truth of: an investigation tending to negate any supernatural influences.</li><li>to nullify or cause to be ineffective: Progress on the study has been negated by the lack of funds.</li><li>(used without object) to be negative; bring or cause negative results: a pessimism that always negates.</li></ul>