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Synonyms

erroneous

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

adjective

  1. containing error; mistaken; incorrect; wrong.

    an erroneous answer.

    Synonyms:
    false, untrue, inaccurate
    Antonyms:
    accurate
  2. straying from what is moral, decent, proper, etc.


erroneous British  
/ ɪˈrəʊnɪəs /

adjective

  1. based on or containing error; mistaken; incorrect

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of erroneous

First recorded in 1350–1400; Middle English, from Latin errōneus “straying,” equivalent to errōn- (stem of errō ) “wanderer” (derivative of err-; see err) + -eus adjective suffix ( see -eous)

Explanation

The adjective erroneous describes something or someone as mistaken and incorrect. Early explorers had the erroneous notion that the oceans were full of dragons. When we talk about being on the "straight and narrow path" we aim to live a truthful and moral life. The Latin root of erroneous, or "to be incorrect" as well as "to be immoral," is errare, which means "to wander." It's clear that we make connections between behavior and direction or space. These two ideas have been linked for a very long time!

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Vocabulary lists containing erroneous

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.

See Examples For:

Civitas Como, a local citizens group, has challenged the legitimacy of ban, describing it as "questionable and erroneous".

From BBC Aug. 20, 2026

Bilt said updates to correct the erroneous collections reports should be reflected on credit reports within three business days.

From The Wall Street Journal Aug. 4, 2026

These include technical issues in China qualifying, a safety car turning the race on its head in Japan, a retirement while leading in Canada, and the still-unresolved farrago over erroneous pit-lane speeding penalties in Monaco.

From BBC Jul. 19, 2026

Some free speech experts felt Disney had a chance to win that case, based on erroneous statements made by ABC News anchor George Stephanopoulos.

From Los Angeles Times May 11, 2026

My father’s care and attentions were indefatigable, but he did not know the origin of my sufferings and sought erroneous methods to remedy the incurable ill.

From "Frankenstein" by Mary Shelley

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