annul

verb

an·​nul ə-ˈnəl 

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

Synonyms

• cancel (out)
• compensate (for)
• correct
• counteract
• counterbalance
• counterpoise
• make up (for)
• negative
• neutralize
• offset

Choose the Right Synonym for 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

Examples of annul in a Sentence

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

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

Recent Examples on the Web

However, in 2013, the Czech Constitutional Court annulled the 2010 government directive, ruling that only a law, not a government, could define criminal offenses. —Dario Sabaghi, Forbes.com, 4 June 2025

In fact, the people’s candidate MKO wins in a landslide, but as the day goes on, the people and Folarin learn the election has been annulled by the military in charge, thrusting Nigeria deeper into dictatorship. —Pete Hammond, Deadline, 18 May 2025

The decision to annul November’s election had little precedent and handed a propaganda victory to Moscow, which has long dismissed Western democracy as a sham in which elites fix the results to suppress unorthodox views and guarantee an outcome favorable to the liberal establishment. —Christian Edwards, CNN, 10 Mar. 2025

If Americans enshrined the act in the Constitution, only a repeal could annul their production. —Literary Hub, 5 June 2025

Word History

Etymology

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

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for annul

• annal
• cannel
• channel
• flannel
• panel
• pannel
• multichannel
• perianal

Kids Definition

annul

verb

an·​nul ə-ˈnəl 

annulled; annulling

1

: to make ineffective : neutralize

2

: to bring to an end legally

annul a marriage

annulment

ə-ˈnəl-mənt

noun

Legal Definition

annul

transitive verb

an·​nul ə-ˈnəl 

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