nullify, negate, annul, abrogate, invalidate mean to deprive of effective or continued existence. nullify implies counteracting completely the force, effectiveness, or value of something.
a penalty nullified the touchdown negate implies the destruction or canceling out of each of two things by the other.
the arguments negate each other annul suggests making ineffective or nonexistent often by legal or official action.
the treaty annuls all previous agreements abrogate is like annul but more definitely implies a legal or official act.
a law to abrogate trading privileges invalidate implies making something powerless or unacceptable by declaration of its logical or moral or legal unsoundness.
the court invalidated the statute
Examples of invalidate in a Sentence
actions that will invalidate the contract
The study invalidates earlier theories.
factors that may invalidate the test results
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'invalidate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.