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

Driving the success is a Lebanese duo with a great backstory (one player used to idolize the other) - which William Mullaly details in this great piece for The National. — Melissa Hancock, Fortune, 4 Aug. 2026

In 2025, the duo gained further attention after welcoming three chicks, one of which died in a winter storm. — Yi-Jin Yu, ABC News, 4 Aug. 2026

That duo landed two edge rushers in the Pro Bowl and had the Rams on the doorstep of the Super Bowl last season. — Nate Atkins, New York Times, 4 Aug. 2026

The mother-daughter duo talked social media, driving, and vintage clothes. — Leigh Blickley, Entertainment Weekly, 4 Aug. 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