erroneous

C2+ Topic:Describing Qualities

US /ɪˈroʊniəs/ UK /ɪˈrəʊniəs/ See IPA manual

Meanings

1

adj
wrong; containing or based on error

The report rested on an erroneous assumption about the data.

Thesaurus

Synonyms

1 adj · wrong; containing or based... incorrect mistaken wrong false inaccurate fallacious faulty

Opposites

correct accurate right true valid

Word family

Derived forms erroneouslyerroneousness

Related forms error err errant erratic

Etymology

From Latin erroneus 'wandering, straying', hence 'mistaken', from erro 'a wanderer', from errare 'to wander, stray'.

erroneus Latin errare Latin

View etymology graph ->

Topics

Describing Qualities Word Formation & Derivatives

External links

# erroneous

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** /ɪˈroʊniəs/
**IPA (UK):** /ɪˈrəʊniəs/

## Meanings
1. wrong; containing or based on error

## Examples
- The report rested on an erroneous assumption about the data.

## Synonyms
- incorrect
- mistaken
- wrong
- false
- inaccurate
- fallacious
- faulty

## Antonyms
- correct
- accurate
- right
- true
- valid

## Derived Forms
- erroneously
- erroneousness

## Related Forms
- error
- err
- errant
- erratic

## Roots and Affixes
- Root: erroneus
- Root: errare

## Etymology
From Latin erroneus 'wandering, straying', hence 'mistaken', from erro 'a wanderer', from errare 'to wander, stray'.

## AI Etymology
Erroneous comes from Latin erroneus 'wandering, straying', hence 'mistaken', from erro 'a wanderer', from errare 'to wander, stray'. The development is chiefly a borrowing or learned continuation, carrying an older form and meaning into English rather than building the word from a purely native base. In present use, it is used as an adjective meaning "wrong; containing or based on error", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes derivatives such as erroneously and erroneousness and related forms such as error, err, errant, and erratic, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Latin erroneus and Latin errare, keeping the history tied to concrete forms rather than a loose resemblance. Its semantic neighborhood is marked by incorrect, mistaken, wrong, and false on one side and contrasts such as correct, accurate, and right on the other, locating the modern specialization without adding a new origin story.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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