verb an·nul \ ə-ˈnəl \
Updated on: 15 Mar 2018

Definition of annul

annulled; annulling
transitive verb
1 : to declare or make legally invalid or void
  • wants the marriage annulled
  • His title to the estate was annulled.
2 : to reduce to nothing : obliterate
3 : to make ineffective or inoperative : neutralize
  • annul a drug's effect

Examples of annul in a Sentence

  1. unfortunately, his arrogant attitude annuls the many generous favors he does for people

  2. plans to annul their short-lived, ill-advised marriage

Recent Examples of annul from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'annul.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of annul

Middle English annullen, from Anglo-French annuller, from Late Latin annullare, from Latin ad- + nullus not any — more at null

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

ANNUL Defined for English Language Learners



Definition of annul for English Language Learners

  • : to say officially that something is no longer valid : to make (something) legally void

ANNUL Defined for Kids


verb an·nul \ ə-ˈnəl \

Definition of annul for Students

annulled; annulling
: to cancel by law : take away the legal force of
  • annul a marriage


\-mənt\ noun

Law Dictionary


transitive verb an·nul \ ə-ˈnəl \

legal Definition of annul

annulled; annulling
1 : to declare (a marriage) to have never validly existed — compare divorce
2 a : to make legally void
b : to declare to no longer have legal effect

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a ridiculous act or situation

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