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
Stunningly designed by Karl Fournier and Olivier Marty of Studio KO, the museum, along with the foundation, has changed the look and feel of Marrakech since its opening in 2017. Hamish Bowles, Vogue, 31 Jan. 2025 Shares of Coca-Cola (KO) shed about 17% of their value following a September 2024 high around $73. David Keller, CNBC, 30 Jan. 2025 The Russian striker produced a stunning knockout in his last outing, finishing Armen Petrosyan with a double spinning-backfist to claim a highlight-reel KO. Jonathan Granoff, Newsweek, 29 Jan. 2025 Chimaev submitted John Phillips on July 15, 2020, only to return on July 25, 2020, and defeat Rhys McKee by KO/TKO. Justin Gest, Newsweek, 20 Jan. 2025 Dariush had a couple more devastating KO losses in 2017-18 prior to mounting an eight-fight win streak that nearly earned him a title shot. Brett Appley, The Athletic, 17 Jan. 2025 Who can forget his iconic Redd Foxx, aka Fred G. Sanford, celebration following the one-punch KO? Brian Mazique, Forbes, 8 Jan. 2025 The larger frame suggests Fury plans to fight for a KO in the rematch. Brian Mazique, Forbes, 21 Dec. 2024 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

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 7 Feb. 2025.

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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