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

Similar political commentary reached the stage at last year’s Glastonbury Festival, where Kneecap and English punk duo Bob Vylan came under fire for leading the audience in chants supporting Palestinians and condemning Israel. —Angela Yang, NBC news, 19 Apr. 2026

Since then, that duo has combined to win seven scoring titles, lead the league in goals twice and compete in two Stanley Cup Final series, as well as capture four league MVPs and five MOPs. —Andrew Knoll, Oc Register, 19 Apr. 2026

However, on appliances that aren’t washed just by the process of using them, this DIY duo may leave a slick film and odd, lingering smells. —Hallie Milstein, Southern Living, 19 Apr. 2026

Pair it with the Deep Sleep Body Cocoon for a calming duo to gently ease you into relaxation before sleep. —ABC News, 18 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