• synonyms


[uh-roh-nee-uh s, e-roh-]
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  1. containing error; mistaken; incorrect; wrong: an erroneous answer.
  2. straying from what is moral, decent, proper, etc.
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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 formser·ro·ne·ous·ly, adverber·ro·ne·ous·ness, nounnon·er·ro·ne·ous, adjectivenon·er·ro·ne·ous·ly, adverbnon·er·ro·ne·ous·ness, noun


See more synonyms for erroneous on Thesaurus.com
1. inaccurate, untrue, false.


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

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British Dictionary definitions for erroneously


  1. based on or containing error; mistaken; incorrect
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Derived Formserroneously, adverberroneousness, 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

Word Origin and History for erroneously



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.

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Online Etymology Dictionary, © 2010 Douglas Harper