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, both divorced with grown children, discussed their lack of future wedding plans during their off-camera time in the Antigua Fantasy Suites. —Bryan Alexander, USA Today, 14 Nov. 2025

Now, the same duo teams up for the first installment in an equally thrilling story about three French police inspectors in 1940 Paris. —Ernesto Lechner, HollywoodReporter, 13 Nov. 2025

According to the duo, the iPhone has been a game changer because of its immediacy, married to high photographic quality. —Miles Socha, Footwear News, 13 Nov. 2025

The early wins, announced during the untelevised Latin Grammy Premiere Ceremony, herald a strong night for the duo signed to Sony Music Latin imprint 5020 Records. —Leila Cobo, Billboard, 13 Nov. 2025

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