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 3,931 “A” headwords), classed as a noun. The kind of spelling people second-guess.

#63,401
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of several South American palms, of the genus Euterpe, having a dark purple drupe.

Corpus desk

Index EN-acai · acai · English

acai · rank #63,401 · 0 variants · 0 confusables

  • FREQ-RARE #63,401
  • LEN-MID 4 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH Abad

Nearest frequency peer: Abad (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “acai”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “acai” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
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)

Long-tail rank of “acai” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).acaifalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Abad” (#63,400), “acrimony” (#63,403), “addressee” (#63,404). Among 3,931 “A” headwords, “acai” is #63,401. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

acai is uncommon English at frequency #63,401 among 3,931 “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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "acai", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

Abad#63,400Yami#63,382apse#63,423WIPO#63,375

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

Source: FrequencyWords open word-frequency list