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
Former bankers, the brother-and-sister duo Jérôme and Claire Bails pivoted to baking in 2021 with the opening of Boulangerie Basil. Mary Winston Nicklin, Condé Nast Traveler, 1 June 2026 Recently, the duo conceived a pair of eaglets, who were named Sandy and Luna by the community. Dean Fioresi, CBS News, 31 May 2026 The San Diego duo responsible for a deadly mosque attack earlier this month were tweens in 2019 when a white supremacist livestreamed himself massacring 51 worshippers in Christchurch, New Zealand. Pilar Melendez, NBC news, 31 May 2026 In the fourth inning, Witt and Garcia — KC’s Gold Glove duo — committed costly errors. Jaylon Thompson, Kansas City Star, 30 May 2026 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 2 Jun. 2026.

Kids Definition

duo

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

More from Merriam-Webster on duo

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster