[ fawr-swair ]
/ fɔrˈswɛər /

verb (used with object), for·swore, for·sworn, for·swearing.

to reject or renounce under oath: to forswear an injurious habit.
to deny vehemently or under oath.
to perjure (oneself).

verb (used without object), for·swore, for·sworn, for·swearing.

to swear falsely; commit perjury.

Nearby words

  1. forssmann, werner,
  2. forster,
  3. forster, e. m.,
  4. forsterite,
  5. forstner bit,
  6. forsworn,
  7. forsyth,
  8. forsythia,
  9. fort,
  10. fort belvoir

Origin of forswear

before 900; Middle English forsweren, Old English forswerian. See for-, swear

Related formsfor·swear·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for forswear

British Dictionary definitions for forswear


/ (fɔːˈswɛə) /

verb -swears, -swearing, -swore or -sworn

(tr) to reject or renounce with determination or as upon oath
(tr) to deny or disavow absolutely or upon oathhe forswore any knowledge of the crime
to perjure (oneself)
Derived Formsforswearer, noun

Word Origin for forswear

Old English forswearian

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for forswear



Old English forswerian "swear falsely," also "abandon or renounce on oath," from for- "completely" + swerian "to swear." Related: Forswore; forsworn; forswearing.

Online Etymology Dictionary, © 2010 Douglas Harper