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

Other offerings include hydrating and volumizing shampoo and conditioner duos; a Deep Moisture Repair Hair Mask; a SahaScalp purifying scrub, and a recent trio of hair and body fragrance mists inspired by different Indian cities and states. — Noor Lobad, Footwear News, 1 Oct. 2026

The Horn-Jackson duo helped make up one of the most underrated defensive backfields in the league a season ago; Horn earned his second consecutive Pro Bowl nod in the 2025 season, and Jackson led the league in passes defended. — Alex Zietlow, Charlotte Observer, 30 Sep. 2026

Adam Schindler and Brian Netto, the filmmaking duo behind the 2024 Netflix thriller Don’t Move, starring Kelsey Asbille and Finn Wittrock, will direct and do their own pass on the script by Pagan and Deutschman. — Matt Grobar, Deadline, 30 Sep. 2026

The duo unveiled a larger, more sculptural version of the Swiss watchmaker’s flagship model inspired by the American artist’s iconic Balloon Dog. — Rachel Cormack, Robb Report, 30 Sep. 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