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

Senior cornerback Vernon Glover and sophomore Gil Jackson have formed a quality duo at corner with good production off the bench from Teon Parks. — Steven Johnson, Fort Worth Star-Telegram, 4 Nov. 2026

Zuckerberg is the richest California resident after the departure of the Google duo. — Kurt Badenhausen, Sportico.com, 4 Nov. 2026

Serra will be doing everything possible to make sure the duo of Ryan Rakowski and Jalen Flowers stays quiet. — Eric Sondheimer, Los Angeles Times, 4 Nov. 2026

The duo also make for an intriguing case study in the evolving journalist-creator model. — Nicholas Quah, Vulture, 4 Nov. 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