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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.

In court, Homeland Security Investigator Robert Kurtz admitted he erroneously listed the address published by the protester account as Huitzilin’s in multiple reports and affidavits.

From Los Angeles Times • Feb. 27, 2026

But a person may also test positive for amyloid and be erroneously diagnosed with Alzheimer’s disease.

From The Wall Street Journal • Feb. 10, 2026

Kelly went on to scold Poehler for a brief moment during the episode when Poehler erroneously thought Paltrow starred in the 2003 drama, “Cold Mountain,” saying that the mistake was “embarrassing and disrespectful.”

From Salon • Jan. 16, 2026

Gutman was suspended by ABC in early 2020 after he erroneously reported on-air that all four of Kobe Bryant’s daughters were on board the helicopter that crashed and killed the NBA icon and eight others.

From Los Angeles Times • Dec. 6, 2025

Reports from abroad asserted, erroneously, that Jack the Ripper had returned.

From "The Devil in the White City" by Erik Larson