duo

1 of 2

noun

ˈdü-(ˌ)ō How to pronounce duo (audio)
 also  ˈdyü-
plural duos
1
: duet
2

duo-

2 of 2

combining form

: two
duologue

Examples of duo in a Sentence

Noun The comedy duo will perform tonight. The author-illustrator duo will be signing their books tomorrow. He and his partner make quite a duo.
Recent Examples on the Web
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Noun
The duo's service to the community extended beyond schools and older people. Sophia Veneziano, USA Today, 22 Apr. 2025 The duo have an ease, often finishing each other’s sentences. Thessaly La Force, Vogue, 22 Apr. 2025 Meanwhile Hurley’s 23-year-old son, Damian Hurley, showed his support for the duo by adding a party face emoji and a red heart. Vivian Kwarm, New York Daily News, 21 Apr. 2025 The Usos had been a tag-team duo for years and were a main part of the Bloodline faction and epic tale over the last three years before the stable collapsed and several stars went their separate ways. Ryan Gaydos, FOXNews.com, 20 Apr. 2025 See All Example Sentences for duo

Word History

Etymology

Noun

Italian, from Latin, two — more at two

Combining form

Latin duo

First Known Use

Noun

1590, in the meaning defined at sense 1

Time Traveler
The first known use of duo was in 1590

Browse Nearby Words

Cite this Entry

“Duo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duo. Accessed 27 Apr. 2025.

Kids Definition

duo

noun
plural duos
1
: duet
2
: a group of two : pair entry 1

More from Merriam-Webster on duo

Last Updated: - Updated example sentences
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