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

Wrangler has a steal of a deal, including a carry-on, checked luggage, and small and large packing cubes for around $100; there’s an American Tourister three-piece set that’s marked down 50 percent, and even 61 percent off a perfect Samsonite checked and carry-on luggage duo. —Kayla Becker, Travel + Leisure, 2 Oct. 2025

The mother-daughter duo sing the song together in the pivotal final concert scene, trading verses and loving looks. —Katie Atkinson, Billboard, 2 Oct. 2025

Again, the duo played a critical role in the regular season as the Blue Jays surged to the top of the American League East in 2025. —Mitch Bannon, New York Times, 2 Oct. 2025

Layered with live jazz and pounding percussion from experimental duo Robin Schulkowsky and Joey Baron, the result gave Hedda an extra pulse. —Scott Roxborough, HollywoodReporter, 2 Oct. 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