k

K5
letter, name/keɪ/phoneme/k/[kʰeɪ]

character

The eleventh letter of the English alphabet, called kay and written in the Latin script.

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Very commonScrabble 5

Meanings

k1

character

uppercase K · plural ks · plural k's

  1. letterlowercaseThe eleventh letter of the English alphabet, called kay and written in the Latin script.
  2. letterlowercaseThe first letter of callsigns allocated to American broadcast television and radio stations west of the Mississippi river.
numeral

uppercase K · plural ks · plural k's

  1. lowercaseThe eleventh numeral symbol of the English alphabet, called kay and written in the Latin script.

k2

nounk (plural ks or k's)

plural ks · plural k's

  1. computingA kilobyte (more formally KB or kB).
  2. computingA kilobit (more formally kb), especially in measuring Internet connection.
  3. colloquialkilometre or kilometres.

    We drove 15 ks before we realised Billy wasn't in the back seat.

  4. colloquialthousand or thousands.

    Just about 65 k of Jack's full salary comes from servicing the Baker account.

  5. The SI measurement value of 1,000

k3

interjection
  1. InternetcolloquialOK

    Synonyms: 'kay

K4

character

lowercase k · plural Ks · plural K's

  1. letteruppercaseThe eleventh letter of the English alphabet, called kay and written in the Latin script.

    The symbol K, however, was not entirely lost; it is found irregularly in inscriptions of all dates down to the times of the empire, and regularly as an initial abbreviation of Kalendæ, Karthago, Kæso (the proper name).

    1876, "C" in the Encyclopædia Britannica, 9th ed., Vol. IV, p. 616
numeral

lowercase k · plural Ks · plural K's

  1. uppercaseThe eleventh numeral symbol of the English alphabet, called kay and written in the Latin script.

K5

nounK (plural Ks)

plural Ks

  1. abbreviationinformallawAbbreviation of contract.
  2. USabbreviationeducationAbbreviation of kindergarten.

    "K-8" is Kindergarten through eighth grade.

  3. abbreviationoftencomputingAbbreviation of kilo-, 1,000 or 1,024.

    5k = 5,000

  4. computingA single character message used as an acknowledgement (ACK), meaning "previous message received and understood."
  5. abbreviationMorse codeAbbreviation of go ahead, over, an indication that a message is complete and a reply is awaited.
  6. abbreviationball gamesAbbreviation of strikeout On a baseball scorecard, a frontwards K signifies striking out while swinging the bat, while a backwards K signifies striking out while looking.
  7. abbreviationboard gamesAbbreviation of king.

    1.e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 e.p. Nxd6 7. Bg5 Nc6 8. Qe3+ Be7 9. Nbd2 0-0 10. 0-0-0 Re8 11. Kb1 (=)

    2022, “2023 Laws of Chess”, in FIDE, page 23
    1 more example

    The correct answer is 1.Rxf6 Rxf6 2.Rf1 Raf8 3.Qg5 Kg7 4.Nh5+ Other sub-variations work, such as playing 2.Qg5 then 3.Rf1 or playing 4.Bxf6+ first before playing 5.Nh5+.

    2023 August 12, GM Noël Studer, “Mastering Chess Puzzles: The Comprehensive Guide to Effective Problem Solving”, in Next Level Chess
  8. abbreviationbiologyAbbreviation of carrying capacity.
  9. abbreviationgeographyAbbreviation of Cretaceous.
  10. abbreviationbusinessAbbreviation of knit.

    Knit 3, p 1, k 2, purl 1, k 2, m 1, k 2 together, k 1.

    1855, Godey's Magazine, volume 51, page 71
  11. abbreviationslangAbbreviation of ketamine (a drug).

    At high levels of concentration of K in the blood, the observer/operator is cut off from his interlock with e.r., including the human consensus reality.

    1978, John C. Lilly, “Seduction by K”, in The Scientist, Philadelphia: Lippincott, →ISBN, page 167
  12. abbreviationentertainmentAbbreviation of Köchel number.

    Die Zauberflöte, K. 620

  13. UKabbreviationgovernmentAbbreviation of Knighthood.
  14. abbreviationeconomicsAbbreviation of capital.
  15. abbreviationmediaAbbreviation of black.
  16. abbreviationslangAbbreviation of Kalashnikov.

    Keep the chopper, I'ma spray that. This is an AR, don't keep the K, man.

    2019 November 22, “Payback” (track 11), in Netflix&Deal, performed by 03 Greedo, Kenny Beats, OhGeesy, and Judge
    5 more examples

    We used to run from the KKK but now we running from our brothers that be holding them K's.

    2011 August 16, “My People”performed by Kendrick Lamar,Jay Rock

    Yeti in the Serengeti, believe the myth. K-man stupid, rub together sticks.

    2018 October 16, “Demon Boy”, performed by Slowthai

    You come to my trap, bitch, you better knock. I keep a 'K and these bullets gon' flock.

    2021 November 19, “Pink 3 Remix”performed by PCAJAY

    A fuck nigga diss GG, he get hit with a K. I'll be back in the morning, just went to the A.

    2022 June 4, “OVO”performed by Big Yavo

    Bitch ass nigga get rocked. I walk in da trap with a Glock and a K in my sock. U fag ass nigga get popped. U a gay lil dumb ahh nigga came from TikTok. I'mma talk my shi won't stop. Bitch u all on my dick for a drop, nigga get off my cock.

    2022 September 25, “Dork”performed by Aeterluv
  17. abbreviationAbbreviation of kritik.

K6

interjection
  1. InternetcolloquialOK

    K, dad, I'll go to my room.

    2019, Justin Blackburn, The Bisexual Christian Suburban Failure Enlightening Bipolar Blues, page 23

    Synonyms: 'kay

Synonyms & antonyms

interjectionOK

Similar

interjectionOK

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More synonyms by meaning

nounthe basic unit of thermodynamic temperature adopted under the Systeme International d'Unites

Similar
Broader
temperature unit

nouna light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

Similar
potassiumatomic number 19
Broader
metallic elementmetal

nounthe cardinal number that is the product of 10 and 100

Broader
large integer

nouna unit of information equal to 1000 bytes

Similar
Broader
computer memory unit

nouna unit of information equal to 1024 bytes

Broader
computer memory unit

nounstreet names for ketamine

Similar
jetsuper acidspecial Khoney oilgreencat valiumsuper C
Broader
ketamineketamine hydrochlorideKetalar

adjectivedenoting a quantity consisting of 1,000 items or units

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

k · interjection

Clipping of OK.

Full word history & related roots →

K · interjection

Clipping of OK.

Full word history & related roots →

Translations

Danish K (konge)
  • K (konge)playing card
Dutch H (heer)
  • H (heer)playing card
Estonian K (kuningas)
  • K (kuningas)playing card
French R
  • Rplaying card
German K (König)
  • K (König)playing card
Icelandic K (köngur)
  • K (köngur)playing card
Polish K (król)
  • K (król)playing card
Portuguese R (rei)
  • R (rei)playing card
Russian К
  • К (K)playing card
Swedish K (kung)
  • K (kung)playing card

Rhymes & wordplay

Rhymes with k

All rhymes →
Cite this entry
APA

k. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/k

MLA

“k.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/k. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “k,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/k.

Source: k on Wiktionary, CC BY-SA 4.0.