Skip to main content
PlainSpell

ac

/æk/noun, adjective

ac is spelled A-C: 2 letters and 2 syllables. It appears 18 times per million words in written English, the 4,667th most frequent word form (wordfreq, 2021 data). As a noun, ac means “account; money of account” (English Wiktionary, September 2026). The plural of ac is acs.

How many letters and syllables are in ac?

Letters2: A-C
Syllables2 (from its American pronunciation)
In writing18 times per million words; the 4,667th most frequent word form
Wrong spellings searchednone measured in search
Pairs people search
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 common is ac?

Ac appears 18 times per million words in written English, the 4,667th 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 ac?

  • UK /æk/
  • UK /ək/
  • US /æk/

Ac has 2 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).

Words people confuse with ac

Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).

a-c vs ac0 B

Also written: a-c (one word or two).

Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).

What rhymes with ac?

The 12 most written words on PlainSpell end in the same sounds as ac from its last stressed vowel (/æk/):

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 ac

  • a.c.
  • a/c
  • acs plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does ac mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    account; money of account

  2. 2

    alicyclic

  3. 3

    Abbreviation of acre.

  4. 4

    Alternative letter-case form of AC (“air conditioning”).

  5. 5

    Alternative letter-case form of AC (“alternating current”).

adjective

  1. 1

    ante cibum, before meals

noun

as AC
  1. 1

    Initialism of absolute ceiling.

  2. 2

    Initialism of access control.

  3. 3

    Initialism of account current.

  4. 4

    Initialism of anterior chamber.

  5. 5

    Initialism of adult contemporary (a radio format).

  6. 6

    Initialism of adenylyl cyclase.

  7. 7

    Initialism of adjuvant chemotherapy.

  8. 8

    Initialism of air conditioning.

adjective

as AC
  1. 1

    Initialism of acromioclavicular.

    AC joint; AC separation

  2. 2

    Initialism of air conditioned.

  3. 3

    Initialism of antichristian.

adverb

as AC
  1. 1

    Initialism of anno Christi (in the year of Christ).

  2. 2

    Initialism of ante Christum, (before Christ).

phrase

as AC
  1. 1

    Initialism of all clear (as in button on electronic calculator).

  2. 2

    Initialism of ante cibum (before meals).

  3. 3

    Initialism of as charged, as in: guilty as charged, usually a/c.

verb

as AC
  1. 1

    Initialism of air-condition.

noun

as Ac
  1. 1

    slangThe Acura Legend automobile.

  2. 2

    Initialism of air-conditioning.

  3. 3

    Initialism of altocumulus cloud.

  4. 4

    Abbreviation of acetate.

  5. 5

    Abbreviation of acetyl.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Ac in Spanish, French, German and Portuguese

LanguageWords
GermanWechselstrom (alternating current), Wechselspannung (alternating potential)
PortugueseCA (alternating current), -íaco (one affected with)
SpanishCA, corriente alterna (alternating current), -aco, -aca (one affected with)

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 ac come from?

Abbreviation.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after ac