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Synonyms

erroneously

American  
[ih-roh-nee-uhs-lee, e-roh-] / ɪˈroʊ ni əs li, ɛˈroʊ- /

adverb

  1. incorrectly; wrongly.

    For years I recorded my birth date erroneously as July 1, until I discovered from my father’s diary that it was actually July 30.

  2. by mistake; unintentionally.

    I just posted these comments again because they were erroneously wiped out the first time due to a technical issue.

Other Word Forms

  • nonerroneously adverb

Etymology

Origin of erroneously

erroneous ( def. ) + -ly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Treasury Secretary Scott Bessent also erroneously stated that you can’t bring a gun to a protest.

From Salon • Jan. 25, 2026

She said Thomas has been "erroneously reported" as being a sound engineer.

From BBC • Dec. 5, 2025

In addition, some residents in Rancho Palos Verdes reported erroneously receiving shelter-in-place alerts from the city of L.A.’s emergency alert system.

From Los Angeles Times • Nov. 25, 2025

The errant test was reminiscent of an alert that was erroneously sent to 10 million phones across L.A.

From Los Angeles Times • Nov. 11, 2025

Every now and then at flea markets, or in the occasional photography book, I come across one of Plantagenet’s old pictures, usually erroneously ascribed to the twenties because of the Daimler.

From "Middlesex: A Novel" by Jeffrey Eugenides

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.