AAA

noun

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

"aaa" is a 3-letter English headword indexed on PlainSpell.

The verdict

“AAA” is a regularly-used English word, ranked #9,990 in English word frequency and used as a noun.

#9,990
frequency rank, English
3
letters
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Initialism of abdominal aortic aneurysm.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

AAA vs as
0% similar
AAA vs at
0% similar
AAA vs an
0% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for AAA
PropertyValue
HeadwordAAA
LanguageEnglish
Part of speechNoun
Letters3
Frequency rank#9,990
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “AAA” 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). AAA lands here:

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

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

Spelling & Dictionary Insight

The English entry for AAA is 3 letters long, classified as a noun. Corpus data places it at rank #9,990 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 27 distinct senses for this headword, so context determines which meaning a reader should apply.

AAA has no tracked misspelling variants, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "as", "at", "an", and more, where similar look or sound leads writers to substitute one word for another in context.

No borrowing history is documented for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is AAA, spelled A-A-A.

Definition

  1. 1
    Initialism of abdominal aortic aneurysm.
  2. 2
    Initialism of aromatic amino acid.
  3. 3
    Initialism of anti-aircraft artillery.
  4. 4
    Initialism of animal-assisted activity.
  5. 5
    Initialism of adult album alternative.
  6. 6
    Initialism of advanced acoustic array.
  7. 7
    Initialism of Access Approval Authority.
  8. 8
    Initialism of accumulated adjustments account, in US Federal Income Tax.
  9. 9
    Initialism of adaptive array antenna.
  10. 10
    Initialism of airborne assault area.
  11. 11
    Initialism of aircraft alert area.
  12. 12
    Initialism of airport airspace analysis.
  13. 13
    Initialism of angle angle angle, a geometric proof.
  14. 14
    Initialism of arrival and assembly area.
  15. 15
    Initialism of astronaut-actuated abort.
  16. 16
    Initialism of attitude, awareness and accountability, a ski safety program.
  17. 17
    Initialism of authentication, authorization and accounting.
  18. 18
    Initialism of automated airlift analysis.
  19. 19
    Initialism of administration, authorization, and authentication, in software security.
  20. 20
    Initialism of AEGIS acquisition agent.
  21. 21
    Initialism of aerospace engineering, applied mechanics, and aviation.
  22. 22
    Initialism of air avenue of approach.
  23. 23
    Initialism of airborne array aperture.
  24. 24
    Initialism of allocations, assessments, and analysis.
  25. 25
    Initialism of alternate assembly area.
  26. 26
    Initialism of authorization accounting activity; authorized accounting activity.
  27. 27
    Initialism of Acquisition Approval Authority.

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 "AAA"?
"AAA" is spelled A-A-A.
What does "AAA" mean?
As a noun, "AAA" means: Initialism of abdominal aortic aneurysm.
What words are commonly confused with "AAA"?
"AAA" is commonly confused with "as", "at", "an". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "AAA" come from?
"AAA" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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 “AAA”

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

  • The one correct English spelling is A-A-A - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “as” - see the side-by-side comparison. AAA vs as
  • 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