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 duo were husband and wife in an episode of Apple TV’s Roar. —Graham Hillard, The Washington Examiner, 20 Mar. 2026

Meanwhile, star Celtics duo of Jayson Tatum and Jaylen Brown combined for 56. —Joseph Dycus, Mercury News, 19 Mar. 2026

On hand to present the Oscars for best costume design and best makeup and hairstyling, the duo’s humorous exchange (and overt nod to the upcoming release of The Devil Wears Prada 2) helped propel Hathaway and her gown into the number-four position. —Laurie Brookins, HollywoodReporter, 19 Mar. 2026

According to the investigation, the duo stripped Linnea’s gear to lighten her body and brought her to the surface. —Madison Dapcevich, Outside, 19 Mar. 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