KO

2 of 2

verb

KO'd kā-ˈōd How to pronounce KO (audio)
ˈkā-(ˌ)ōd
; KO'ing kā-ˈō-iŋ How to pronounce KO (audio)
ˈkā-(ˌ)ō-iŋ

transitive verb

: to knock out (as in boxing)

Examples of KO in a Sentence

Noun He scored a KO in the second round. Verb He was KO'd in the second round.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
For an even more legendary gift, add on a pair of KO Studio’s boxing gloves ($69), which are equally cute and designed specifically to fit and cushion women’s hands. Lauren Mazzo, Glamour, 10 Dec. 2024 Taleb performed excellently and earned his PFL MENA championship with a first-round KO. Trent Reinsmith, Forbes, 29 Nov. 2024 Most of the wagers at BetMGM Sportsbook were on proposition bets, with the most popular being on Tyson to prevail either by knockout, decision or a first-round KO. Mark Anderson, Chicago Tribune, 18 Nov. 2024 Taylor, the 2012 Olympic gold medalist, is 23-1 with six wins by KO. 6d ago / 7:43 PM PST Copied Share Amanda Serrano heading to ring Greg Rosenstein Serrano, who dropped the last fight with Taylor by split decision, is one of the best female fighters ever. Greg Rosenstein, NBC News, 16 Nov. 2024 Cruz has not fought since losing to Marlon Vera via KO in August 2022. Brian Mazique, Forbes, 5 Nov. 2024 Look at Ruffy’s KO wins as a professional mixed martial artist in this video. Brian Mazique, Forbes, 23 Oct. 2024 Though observers might believe Beterbiev’s best chance is to win by KO and Bivol’s best chance is to outbox his opponent, Beterbiev is also a skillful boxer and Bivol has solid power. Josh Katzowitz, Forbes, 12 Oct. 2024 The moment happened in the second round when the City Kickboxing product flattened Latu with a left hook to register the one-punch KO to lock up the contract offer from White. Brian Mazique, Forbes, 11 Sep. 2024

Word History

Etymology

Noun

knock out

First Known Use

Noun

1911, in the meaning defined above

Verb

1926, in the meaning defined above

Time Traveler
The first known use of KO was in 1911

Dictionary Entries Near KO

Cite this Entry

“KO.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/KO. Accessed 22 Dec. 2024.

Kids Definition

KO

1 of 2 noun
(ˈ)kā-ˈō How to pronounce KO (audio)
ˈkā-ō
plural KO's
: a knockout in boxing

KO

2 of 2 verb
KO'd kā-ˈōd How to pronounce KO (audio)
ˈkā-ōd
; KO'ing -ˈō-iŋ How to pronounce KO (audio)
-ō-
: to knock out in boxing

More from Merriam-Webster on KO

Last Updated: - Updated example sentences
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