from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To make or declare void or invalid, as a marriage or a law; nullify.
  • transitive v. To obliterate the effect or existence of: "The significance of the past . . . is annulled in idle gusts of electronic massacre” ( Alexander Cockburn).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To formally revoke the validity of.
  • v. To dissolve (a marital union) on the grounds that it is not valid.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To reduce to nothing; to obliterate.
  • transitive v. To make void or of no effect; to nullify; to abolish; to do away with; -- used appropriately of laws, decrees, edicts, decisions of courts, or other established rules, permanent usages, and the like, which are made void by component authority.

from The Century Dictionary and Cyclopedia

  • To reduce to nothing; annihilate; obliterate.
  • To make void or null; nullify; abrogate; abolish; do away with: used especially of laws, decrees, edicts, decisions of courts, or other established rules, usages, and the like.
  • Synonyms Abolish, Repeal, etc. (see abolish); Nullify, Annihilate, etc. (see neutralize); retract, declare null and void, supersede.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. cancel officially
  • v. declare invalid


Middle English annullen, from Old French annuller, from Late Latin annullāre : Latin ad-, ad- + Latin nullus, none; see ne in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French anuller, from Latin annullō ("annihilate, annul"), from ad ("to") + nūllus ("none, not any"). (Wiktionary)



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