Skip to main content
PlainSpell

cas

/kæʒ/adjective

cas is spelled C-A-S: 3 letters and one syllable. It appears 3.2 times per million words in written English, the 14,731st most frequent word form (wordfreq, 2021 data). As an adjective, cas means “Abbreviation of casual” (English Wiktionary, September 2026).

How many letters and syllables are in cas?

Letters3: C-A-S
Syllables1 (from its American pronunciation)
In writing3.2 times per million words; the 14,731st most frequent word form
Wrong spellings searchednone measured in search
Same letters

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); rhymes and same-letter words are computed by PlainSpell from its own word list.

How common is cas?

Cas appears 3.2 times per million words in written English, the 14,731st 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 cas?

  • /kæʒ/

Cas has one syllable (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). Recordings: LL-Q1860_(eng)-Vealhurl-cas.wav, Wikimedia Commons (author and licence on each file's page).

What rhymes with cas?

No other word on PlainSpell ends in the same sounds as cas.

Spelled with the same letters in another order: sac, asc.

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 cas

  • more cas comparative
  • most cas superlative
  • more cas' comparative
  • most cas' superlative

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

What does cas mean?

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

adjective

  1. 1

    informalAbbreviation of casual.

noun

as CAS
  1. 1

    Initialism of channel-associated signalling.

  2. 2

    Initialism of combat armor suit, used for a powered, armed and armored exoskeleton, in fiction and military research.

  3. 3

    Initialism of calibrated airspeed.

  4. 4

    Acronym of collision avoidance system.

  5. 5

    Acronym of close air support.

  6. 6

    Initialism of computer algebra system.

  7. 7

    Initialism of complex adaptive system.

  8. 8

    Initialism of compare and swap.

adjective

as Cas
  1. 1

    Acronym of CRISPR-associated.

noun

as Cas
  1. 1

    Ellipsis of Cas gene.

  2. 2

    Ellipsis of Cas protein.

  3. 3

    Ellipsis of Cas sequence.

noun

as CAs
  1. 1

    plural of CA (a form of CA)

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

What to look up after cas