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

Junior guard Ashlynn Shade also stepped up in key moments to join the superstar duo in double digits, logging 13 points, six rebounds, five assists and a steal. —Emily Adams, Hartford Courant, 19 Feb. 2026

The duo went to great pains to source pieces from the brands and collections Bessette Kennedy wore, including Prada coats and shoes and her favored Levi denim cut. —Rachel Tashjian, CNN Money, 19 Feb. 2026

In the soaring lobby, which extends two floors to the reception and restaurant, Icelandic-Danish artist Olafur Eliasson’s duo of geometric, crystalline figures bounce glacier-blue light off the surrounding mirrors. —Lane Nieset, Travel + Leisure, 19 Feb. 2026

Still, the duo can occasionally repeat the same shortcomings of the film. —Harry Tafoya, Pitchfork, 19 Feb. 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