erroneous
/ɛˈɹoʊ.ni.əs/adjective
erroneous is spelled E-R-R-O-N-E-O-U-S. The wrong spelling people search most is errorneous: about 40 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 128 of all searches for the word. Erroneous is an adjective meaning “Containing an error; inaccurate”.
How many letters and syllables are in erroneous?
| Letters | 9: E-R-R-O-N-E-O-U-S |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | 1.7 times per million words; the 21,798th most frequent word form |
| Wrong spellings searched | 1; the most searched, errorneous, about 40 Bing searches a month (all of them) |
| Rhymes with |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026); rhymes and same-letter words are computed by PlainSpell from its own word list.
How do you spell erroneous?
Erroneous is spelled E-R-R-O-N-E-O-U-S. One wrong spelling is searched or written often enough to measure; together they are about 1 in 128 of the searches for erroneous in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is erroneous?
Erroneous appears 1.7 times per million words in written English, the 21,798th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce erroneous?
- UK /ɪˈɹəʊni.əs/
- UK /ɛˈɹəʊni.əs/
- US /ɛˈɹoʊ.ni.əs/
Erroneous has 4 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-erroneous.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with erroneous?
6 words on PlainSpell end in the same sounds as erroneous from its last stressed vowel (/oʊniəs/):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of erroneous
- more erroneous comparative
- most erroneous superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does erroneous mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Containing an error; inaccurate.
His answer to the sum was erroneous.
- 2
Derived from an error.
His conclusion was erroneous, since it was based on a false assumption.
- 3
Mistaken.
Her choice at the line-up proved to be erroneous, as she had only seen the mugger for an instant.
- 4
obsoleteWandering; erratic.
- 5
Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal.
If, while having the power to act, one commits error in the exercise of that power, he acts erroneously.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Erroneous in Spanish, French, German and Portuguese
In the sense containing an error; inaccurate:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does erroneous come from?
From late Middle English erroneous, from Middle French erroneux, from Latin erroneus.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).