erroneous

From late Middle English erroneous, from Middle French erroneux, from Latin erroneus.

• (UK) IPA^(key): /ɪˈɹəʊ.nɪ.əs/, /ɛɹˈəʊ.nɪ.əs/

• Audio (Southern England):

  (file)

• (US) IPA^(key): /ɛɹˈoʊ.ni.əs/, /ɪˈɹoʊ.ni.əs/

erroneous (comparative more erroneous, superlative most erroneous)

1. Containing an error; inaccurate.

   His answer to the sum was erroneous.

2. Derived from an error.

   His conclusion was erroneous, since it was based on a false assumption.

3. Mistaken.

   Her choice at the line-up proved to be erroneous, as she had only seen the mugger for an instant.

4. (obsolete) Wandering; erratic.
5. (law) Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal.

   If, while having the power to act, one commits error in the exercise of that power, he acts erroneously.

• errorful
• (containing an error): inaccurate, incorrect, wrong
• (derived from an error): fallacious, false, faulty, flawed
• (mistaken): mistaken, wrong
• (legal: deviating from the requirements of the law):

• errorless

• erroneously
• erroneousness

• errant
• erratic
• fallacious