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

Driver’s character concocts a way for the duo to start an environmental business together as Russians, largely the mafia, are involved in recalibrating a canal in New York City. —Anthony D'alessandro, Deadline, 17 May 2026

Elsewhere, the female duo invokes some breaking of the fourth wall for good measure, just as the film, at points, entertains conspiratorial views regarding 9/11, perhaps to dispel the idea that this work is solely an exercise in verisimilitude. —Lé Baltar, IndieWire, 17 May 2026

The film, now in development, follows two cousins trying to solve a cold case involving a rock duo who disappeared without a trace in 1999. —Etan Vlessing, HollywoodReporter, 17 May 2026

Sidibe, 43, and Lourd, 33, chatted exclusively with PEOPLE at the Disney 2026 Upfront at New York City's Javits Center on Tuesday, May 12, where the duo gave a glimpse of what to expect with season 13. —Lexi Lane, PEOPLE, 17 May 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