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[fawr-wawrn, fohr-] /fɔrˈwɔrn, foʊr-/
verb (used with object)
to warn in advance.
Origin of forewarn
1300-50; Middle English forwarnen. See fore-, warn
Related forms
forewarner, noun
forewarningly, adverb
unforewarned, adjective
well-forewarned, adjective
caution, admonish, alert, prewarn, tip off. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for forewarn
  • The poll may also help forewarn of potential pitfalls.
  • Its purpose is to forewarn veteran and neophyte administrators concerning a number of problems which they may not have met.
  • They will forewarn motorists of the closure date and will remain in place during the closure.
  • Calderas should be monitored for unrest that might forewarn of strong regional earthquakes.
British Dictionary definitions for forewarn


(transitive) to warn beforehand
Derived Forms
forewarner, noun
forewarningly, adverb
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
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Word Origin and History for forewarn

early 14c., from fore- + warn. Related: Forewarned; forewarning.

Online Etymology Dictionary, © 2010 Douglas Harper
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