verb an·nul \ə-ˈnəl\

: to say officially that something is no longer valid : to make (something) legally void


Full Definition of ANNUL

transitive verb
:  to reduce to nothing :  obliterate
:  to make ineffective or inoperative :  neutralize <annul the drug's effect>
:  to declare or make legally invalid or void <wants the marriage annulled>

Origin of ANNUL

Middle English annullen, from Anglo-French annuller, from Late Latin annullare, from Latin ad- + nullus not any — more at null
First Known Use: 15th century

Synonym Discussion of ANNUL

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>.

Rhymes with ANNUL

ANNUL Defined for Kids


verb an·nul \ə-ˈnəl\

Definition of ANNUL for Kids

:  to cancel by law :  take away the legal force of <annul a marriage>
an·nul·ment \-mənt\ noun


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