erroneous.
Containing an error; inaccurate.
Meaning & usage
Containing an error; inaccurate.
His answer to the sum was erroneous.
Derived from an error.
His conclusion was erroneous, since it was based on a false assumption.
Mistaken.
Her choice at the line-up proved to be erroneous, as she had only seen the mugger for an instant.
Wandering; erratic.
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.
Where this word comes from
From late Middle English erroneous, from Middle French erroneux, from Latin erroneus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.