duo

1 of 2

noun

ˈdü-(ˌ)ō How to pronounce duo (audio)
also ˈdyü-
plural duos
Synonyms of duonext
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
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
Authorities have identified the assailants as a father-son duo, and believe the attack was inspired by ISIS. Michael Sinkewicz, FOXNews.com, 18 Dec. 2025 Ideal for sensitive eyes or anyone who hates raccoon smears, this duo feels practical yet indulgent. Jennifer Hussein, Allure, 18 Dec. 2025 The duo opened the original pizza spot Roberta’s in Brooklyn in 2008, later opening two more Roberta’s in New York. Miami Herald, 18 Dec. 2025 The duo moved to a midday slot on weekdays in 1996, but this promotion was short-lived as WMVP dropped its all-sports format nine weeks later. Adam Harrington, CBS News, 18 Dec. 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 20 Dec. 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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