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

  • transitive v. To make impossible, as by action taken in advance; prevent. See Synonyms at prevent.
  • transitive v. To exclude or prevent (someone) from a given condition or activity: Modesty precludes me from accepting the honor.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Remove the possibility of; rule out; prevent or exclude; to make impossible.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To put a barrier before; hence, to shut out; to hinder; to stop; to impede.
  • transitive v. To shut out by anticipative action; to prevent or hinder by necessary consequence or implication; to deter action of, access to, employment of, etc.; to render ineffectual; to obviate by anticipation.

from The Century Dictionary and Cyclopedia

  • To close; stop up; shut; prevent access to.
  • To shut out; hinder by excluding; prevent; impede.
  • To prevent by anticipative action; render in-effectual or unsuccessful; hinder the action of.
  • Synonyms To prevent, bar, debar, prohibit.

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

  • v. make impossible, especially beforehand
  • v. keep from happening or arising; make impossible


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

Latin praeclūdere : prae-, pre- + claudere, to close.



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  • Poor weather precluding my morning outing, we yarned by the peat fire

    & the hours sped by like minutes.

    January 29, 2018

  • keep from happening or arising; make impossible

    The manager specified that all other gates be locked, to preclude the possibility of persons without tickets entering the arena undetected.

    October 12, 2016

  • In our times, the increasing complexity of our civilization would seem to preclude any serious thought of recapturing the harmony possible only in an age of grace and simplicity.

    José Enrique Rodó, Ariel

    October 30, 2011