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

Ryan Gosling will no longer star in the next film from the Oscar-winning directing duo Daniel Kwan and Daniel Scheinert, Variety has confirmed. —Clayton Davis, Variety, 2 Apr. 2026

Adding to that, Kocher said that one of the duo’s primary goals is to generate opposing emotional responses right on top of each other to keep the audience engaged. —Jim Hemphill, IndieWire, 2 Apr. 2026

The show will incorporate prediction market information and polling, though the duo don’t plan on partnering financially with the major prediction markets. —Max Tani, semafor.com, 1 Apr. 2026

Read on for a roundup of images of the TV-famous duo in their element—plus a few of Lucy's new life after their split. —Michael Gioia, Architectural Digest, 1 Apr. 2026

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