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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.
based on or containing error; mistaken; incorrect

straying from a wise or right path
Word Origin

Latin errare ‘to wander’

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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  • Error-analysis

    noun, Linguistics. 1. the systematic study of deviations from target-language norms in the course of second-language acquisition, especially in terms of the learner’s developing interlanguage.

  • Error-based testing

    programming Testing where information about programming style, error-prone language constructs, and other programming knowledge is applied to select test data capable of detecting faults, either a specified class of faults or all possible faults. (1996-05-13)

  • Error-coin

    noun, Numismatics. 1. a coin showing evidence of a mistake in its manufacture.

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