duo

1 of 2

noun

ˈdü-(ˌ)ō 

 also  ˈdyü-

plural duos

1

: duet

2

: pair sense 2

duo-

2 of 2

combining form

: two

duologue

Synonyms

Noun

• pair
• couple

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

Noun

The duo are the third and fourth celebrities that have been announced for Season 34, alongside wildlife conservationist Robert Irwin (the son of the late Steve Irwin and brother of Season 21 champ Bindi Irwin), and model and influencer Alix Earle. —Kate Aurthur, Variety, 1 July 2025

While the defensive duo has returned, four players remain absent with injury as Ferland Mendy, Eduardo Camavinga, Endrick Felipe and David Alaba are all still sidelined. —Sam Leveridge, Forbes.com, 1 July 2025

The British alt-rap duo Bob Vylan are the latest source responsible for backlash and outrage regarding artists speaking out about the war in Gaza. —Larisha Paul, Rolling Stone, 1 July 2025

Nearly inseparable just six months ago, the duo have fallen out over Trump’s tax cut and spending bill that will drive up the national debt. —Christiaan Hetzner, Fortune, 1 July 2025

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

Kids Definition

duo

noun

ˈd(y)ü-ō 

plural duos

1

: duet

2

: a group of two : pair entry 1