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Definitions

annul

[uh-nuhl] / əˈnʌl /
VERB
void an agreement
Synonyms
STRONGEST
abolish abrogate cancel declare delete dissolve expunge invalidate nullify quash repeal rescind retract reverse revoke undo vacate
STRONG
abate annihilate countermand discharge efface erase kill negate neutralize nix obliterate recall scrub vitiate
WEAK
blot out call off get off the hook render null and void wipe out
Antonyms
STRONGEST
allow approve continue do enact enforce establish institute legalize pass permit ratify sanction support uphold validate
STRONG
create help revive save schedule set up
WEAK
keep restore retain revalidate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Delivering her opinion for the Court of Justice of the European Union, advocate general Tamara Capeta sided with parliament in saying the court should "annul the commission's contested decision" which was made "without any explanation."

From Barron's • Feb. 12, 2026

Andros immediately sought to annul the move on grounds that only he had the authority to name a thanksgiving day.

From The Wall Street Journal • Nov. 25, 2025

The Church was established in the 16th century by Henry VIII, the king who broke with the Catholic church over its refusal to annul his marriage to Catherine of Aragon.

From Barron's • Oct. 17, 2025

The high representative has the power to impose or annul laws – and sack officials ranging from judges to political leaders.

From BBC • Feb. 26, 2025

No, I think, but even if it were, it turned out to be Mitt, some wondrous thing, who will forever annul any of our regret.

From "Native Speaker" by Chang-rae Lee

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.