Annul

//əˈnʌl// verb

verb ·Moderate ·College level

Definitions

Verb
  1. 1
    To formally revoke the validity of. transitive

    "If you ask how religion thus falls on the thorns and faces death, and in the very act annuls annihilation, I cannot explain the matter, for it is religion's secret, and to understand it you must yourself have been a religious man of the extremer type."

  2. 2
    cancel officially wordnet
  3. 3
    To dissolve (a marital union) on the grounds that it is not valid. transitive
  4. 4
    declare invalid wordnet

Synonyms

All synonyms
invalidaterevokeabateabolishabrogateabstract

Antonyms

All antonyms
uphold

Example

More examples

"“She speaks truly,” said Lady Ashton, “it WAS I who, authorised alike by the laws of God and man, advised her, and concurred with her, to set aside an unhappy and precipitate engagement, and to annul it by the authority of Scripture itself.”"

Etymology

From Middle English annullen, from Old French anuller, from Latin annullō (“annihilate, annul”), from ad (“to”) + nūllus (“none, not any”).

Related phrases

null and void

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.