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 husband-and-wife duo brought the brand to life while on a quest to create a gin that was gentler on Jenkins’s vocal cords than a traditional spirit, which can affect the voice over time. — Nicole Hoey, Robb Report, 24 Sep. 2026

The duo are teaming with Goliath and Perfect Game on Celebrity Sequence, based on Goliath’s global hit board game Sequence. — Denise Petski, Deadline, 23 Sep. 2026

The duo’s Black/White/Metallic Silver makeup features the same croc texture placement on its two uppermost side panels, but shifts from the matte finish seen on the Enigma Stone pair for a glossy, patent leather-like sheen on its black croc cutouts. — Riley Jones, Footwear News, 23 Sep. 2026

Together, the duo and their teammates have the Eagles ready for a competitive Mission League schedule. — Eric Sondheimer, Los Angeles Times, 23 Sep. 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