Added 9 October 2026
erroneous
/ɪˈɹəʊni.əs/ adjective
In Latin: erroneus, falsus Wiktionary
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about erroneous at Wordnik → Where our words come from →
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Containing an error; inaccurate.
His answer to the sum was erroneous.
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Derived from an error.
His conclusion was erroneous, since it was based on a false assumption.
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Mistaken.
Her choice at the line-up proved to be erroneous, as she had only seen the mugger for an instant.
Origin
From late Middle English erroneous, from Middle French erroneux, from Latin erroneus.
From Wiktionary, via Kaikki.org (CC BY-SA)