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 duo created the app to list products before purchase to discover if others are interested in renting or owning it next. — Kanika Talwar, Footwear News, 15 Oct. 2026

Together, the duo are developing a folk-horror feature called Living Saints, following two disabled women who are accused of witchcraft in 1500s Scotland. — Katie Campione, Deadline, 14 Oct. 2026

Sofi Tukker will also host the first ever Live Stage takeover in Ultra Miami history when the duo brings its Animal Talk brand to the space. — Katie Bain, Billboard, 14 Oct. 2026

The new Super Chronomat watch duo is just the latest collab from Breitling and Aston Martin. — Nicole Hoey, Robb Report, 14 Oct. 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