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

  • n. Law The deliberate, willful giving of false, misleading, or incomplete testimony under oath.
  • n. The breach of an oath or promise.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The deliberate giving of false or misleading testimony under oath.

from the GNU version of the Collaborative International Dictionary of English

  • n. False swearing.
  • n. At common law, a willfully false statement in a fact material to the issue, made by a witness under oath in a competent judicial proceeding. By statute the penalties of perjury are imposed on the making of willfully false affirmations.

from The Century Dictionary and Cyclopedia

  • n. The violation of any oath, vow, or solemn affirmation; specifically, in law, the wilful utterance of false testimony under oath or affirmation, before a competent tribunal, upon a point material to a legal inquiry.
  • n. Synonyms See perjure.

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

  • n. criminal offense of making false statements under oath


Middle English periurie, from Anglo-Norman, from Latin periūrium, from periūrāre, to perjure; see perjure.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Ultimately from Latin perjurare ("swear falsely"), from Latin per- +‎ jurare. (Wiktionary)



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