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 romance began after her divorce from NFL legend Tom Brady in 2022. Janelle Ash, FOXNews.com, 21 June 2025 The track earned the duo a Grammy win for Best Country Duo/Group Performance, intertwining their Nashville and Houston roots into a twangy ode to rebellion and that ride-or-die love. Amber Corrine, VIBE.com, 20 June 2025 However, getting the cafe started was a steep financial struggle for the husband-and-wife duo. Camila Pedrosa, Sacbee.com, 20 June 2025 The duo tested for regional spillover effects (i.e. assessing if a ban in one city led to an increase in bag litter in neighboring communities, which might happen if people were driven to shop outside of bag ban zones). Lauren Leffer, Popular Science, 19 June 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

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Cite this Entry

“Duo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duo. Accessed 26 Jun. 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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