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 videos have brought overwhelming success, leading the mother-daughter duo to write a New York Times-bestselling and James Beard award-winning cookbook called Umma. — Chiara Kim, PEOPLE, 8 July 2026

The duo, known for fictional young adult content on YouTube, plans to keep leveling up their material while keeping it native to the internet. — Cerys Davies, Los Angeles Times, 8 July 2026

The duo also bet much of the crowd each night is people from the neighborhoods that encircle it. — Sophie Lindberg, Kansas City Star, 7 July 2026

Green Bay returns the underwhelming duo of Keisean Nixon and Carrington Valentine as its starting corners. — Rob Reischel, Forbes.com, 7 July 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