acai

/əˈsaɪ.iː/

//əˈsaɪ.iː// noun

By · According to Wiktionary data (CC BY-SA) ·

"acai" is a 4-letter English headword indexed on PlainSpell.

The verdict

“acai” is uncommon English (frequency #63,401 among 35,202 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#63,401
frequency rank, English
35,202
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of several South American palms, of the genus Euterpe, having a dark purple drupe.

Key facts for acai
PropertyValue
Headwordacai
LanguageEnglish
Part of speechNoun
IPA/əˈsaɪ.iː/
Letters4
Frequency rank#63,401
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “acai” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). acai lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

acai is uncommon English at frequency #63,401 among 35,202 “A” headwords, classed as anoun, transcribed /əˈsaɪ.iː/. Rarity is why readers land here mid-draft. 2 senses are on record.

We couldn't generate a plausible misspelling set for acai, a sign its spelling follows regular English conventions. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: Borrowed from Brazilian Portuguese açaí, from Proto-Tupi-Guarani *wat͡saʔi. The correct English form is acai, spelled A-C-A-I.

Definition

  1. 1
    Any of several South American palms, of the genus Euterpe, having a dark purple drupe.
  2. 2
    acai berry, the fruit of these trees, harvested for its juice.

Etymology

Borrowed from Brazilian Portuguese açaí, from Proto-Tupi-Guarani *wat͡saʔi.

This word in other languages

asaí(Español)pinot(Français)açaizeiro(Português)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "acai"?
"acai" is spelled A-C-A-I. The IPA pronunciation is /əˈsaɪ.iː/.
What does "acai" mean?
As a noun, "acai" means: Any of several South American palms, of the genus Euterpe, having a dark purple drupe.
How do you pronounce "acai"?
The IPA (International Phonetic Alphabet) transcription for "acai" is /əˈsaɪ.iː/. 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 "acai"?
Borrowed from Brazilian Portuguese açaí, from Proto-Tupi-Guarani *wat͡saʔi. 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 “acai”

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

  • The one correct English spelling is A-C-A-I - every other letter order is a misspelling in standard orthography.
  • Say it as /əˈsaɪ.iː/ (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

Other uncommon English words near this rank

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