acetous

/ˈæ.sɪ.təs/

//ˈæ.sɪ.təs// adj

"acetous" is a 7-letter English headword indexed on PlainSpell.

The verdict

“acetous” is outside the top-ranked English vocabulary, used as an adjective - the kind of word writers most often double-check.

Unranked
below top-frequency English
7
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Having a sour taste; sour; acid.

Key facts for acetous
PropertyValue
Headwordacetous
LanguageEnglish
Part of speechAdjective
IPA/ˈæ.sɪ.təs/
Letters7
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “acetous” sits in English frequency

acetous falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for acetous is 7 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈæ.sɪ.təs/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

No misspelling variants are generated for acetous in our index, a sign its spelling follows regular English conventions. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Latin acētum (“vinegar”) + -ous, the former from aceō (“to be sour”). The correct English form is acetous, spelled A-C-E-T-O-U-S.

Definition

  1. 1
    Having a sour taste; sour; acid.
  2. 2
    Causing, or connected with, acetification

Etymology

From Latin acētum (“vinegar”) + -ous, the former from aceō (“to be sour”).

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "acetous"?
"acetous" is spelled A-C-E-T-O-U-S. The IPA pronunciation is /ˈæ.sɪ.təs/.
What does "acetous" mean?
As an adjective, "acetous" means: Having a sour taste; sour; acid.
How do you pronounce "acetous"?
The IPA (International Phonetic Alphabet) transcription for "acetous" is /ˈæ.sɪ.təs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "acetous"?
From Latin acētum (“vinegar”) + -ous, the former from aceō (“to be sour”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “acetous”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is A-C-E-T-O-U-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈæ.sɪ.təs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list