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[uh-roh-nee-uh s, e-roh-] /əˈroʊ ni əs, ɛˈroʊ-/
containing error; mistaken; incorrect; wrong:
an erroneous answer.
straying from what is moral, decent, proper, etc.
Origin of erroneous
1350-1400; Middle English < Latin errōneus straying, equivalent to errōn- (stem of errō) wanderer (derivative of err-; see err) + -eus -eous
Related forms
erroneously, adverb
erroneousness, noun
nonerroneous, adjective
nonerroneously, adverb
nonerroneousness, noun
1. inaccurate, untrue, false.
1. accurate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for erroneous
Contemporary Examples
Historical Examples
  • Hence, to attribute the support solely to the surface area is erroneous.

    Flying Machines W.J. Jackman and Thos. H. Russell
  • The Pagoda might be an erroneous variant of the thunderbolt Vadjra.

  • The story, often copied from Withers, that Neely was killed by a wolf, is erroneous.

    Chronicles of Border Warfare Alexander Scott Withers
  • All of this has produced an erroneous impression that the times are out of joint.

    The Meaning of Evolution Samuel Christian Schmucker
  • And yet there is a further consideration: may not all these notions of friendship be erroneous?

    Lysis Plato
British Dictionary definitions for erroneous


based on or containing error; mistaken; incorrect
Derived Forms
erroneously, adverb
erroneousness, noun
Word Origin
C14: (in the sense: deviating from what is right), from Latin errōneus, from errāre to wander
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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Contemporary definitions for erroneous

straying from a wise or right path

Word Origin

Latin errare 'to wander''s 21st Century Lexicon
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Word Origin and History for erroneous

late 14c., from Old French erroneus and directly from Latin erroneus "vagrant, wandering" (in Late Latin "erroneous"), from erronem (nominative erro) "vagabond," from errare "to wander, err" (see err). Related: Erroneously.

Online Etymology Dictionary, © 2010 Douglas Harper
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