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 of duo

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 late comedian and actor, who was one half of the iconic duo the Blues Brothers with Dan Aykroyd, died of an apparent drug overdose. —Angel Saunders, PEOPLE, 12 Dec. 2025

Narrow defeats to a rejuvenated Milan and reigning champions Napoli were far easier to swallow, and a victory in Sardinia would have seen Roma stay within a point of the leading duo. —Jack Bantock, New York Times, 12 Dec. 2025

Pop-rockers The Beaches, indie-rock band Mother Mother and artsy duo Tune-Yards highlight more than 120 acts revealed as part of the second wave of musicians. —Michael Deeds, Idaho Statesman, 11 Dec. 2025

Yeti French Press Coffee Set Another excellent coffee gift, this Yeti duo combines a rugged French press with a stainless-steel Rambler travel mug, delivering barista-level brew miles from the nearest café. —Francesca Krempa, Travel + Leisure, 11 Dec. 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