undoubted

[uhn-dou-tid]
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Origin of undoubted

late Middle English word dating back to 1425–75; see origin at un-1, doubt, -ed2
Related formsun·doubt·ed·ly, adverb

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for undoubted

undoubted

adjective
  1. beyond doubt; certain or indisputable
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 undoubted
adj.

mid-15c., from un- (1) "not" + past participle of doubt (v.).

Online Etymology Dictionary, © 2010 Douglas Harper