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
The duo joined stars like Brendan Fraser and Anthony Rapp as competitive prep school students in the 1992 drama School Ties. Zoey Lyttle, PEOPLE, 16 Jan. 2026 Additional items include Art of Tea’s floral blends, Maude’s body-oil and massage-candle duo, Tokyomilk’s signature fragrance, Kim Sybert coasters, and Dear Annabelle notecards. Lisa Lockwood, Footwear News, 15 Jan. 2026 Building the drone 3D printing enabled the father-son duo to rapidly build prototypes and switch things up when needed. New Atlas, 15 Jan. 2026 The duo reportedly met on a cruise the year prior and had one child together, a son named Luca, who was born in early 1970. Emma Banks, InStyle, 15 Jan. 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 19 Jan. 2026.

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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