duo

[ doo-oh, dyoo-oh ]

/ ˈdu oʊ, ˈdyu oʊ /

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See synonyms for duo on Thesaurus.com

noun, plural du·os.

Music. duet.

two persons commonly associated with each other; couple.

two animals or objects of the same sort; two things ordinarily placed or found together; a pair: a duo of lovebirds.

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His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

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Origin of duo

1580–90; <Italian <Latin: two

Other definitions for duo (2 of 2)

duo-

a combining form meaning “two,” used in the formation of compound words: duologue.

Origin of duo-

Combining form of Greek dýo,Latin duotwo

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use duo in a sentence

Gradus initialis hujus status est amicitia inordinata inter duos pueros aut duas puellas.
Essays In Pastoral Medicine|Austin Malley
Kraft-Ebing enumerat decem casus congenitos in maribus, et duos in feminis.
Essays In Pastoral Medicine|Austin Malley
Neque enim eximitur, sed obscuratur, et tantm aliqua inter duos vocales velut nota est, ne ips coeant.
View of the State of Europe during the Middle Ages, Vol. 3 (of 3)|Henry Hallam
Ex pastoribus duos ferocissimos deligunt ad patrandum facinus.
Selections from Viri Romae|Charles Franois L'Homond

Et Rex quidem hc etiam scribi ad duos Cardinales jussit secretario Vitandri.
The Reign of Henry the Eighth, Volume 1 (of 3)|James Anthony Froude

British Dictionary definitions for duo (1 of 2)

duo

/ (ˈdjuːəʊ) /

noun plural duos or dui (ˈdjuːiː)

music

a pair of performers
another word for duet

a pair of actors, entertainers, etc

informal a pair of closely connected individuals

Word Origin for duo

C16: via Italian from Latin: two

British Dictionary definitions for duo (2 of 2)

duo-

combining form

indicating twoduotone

Word Origin for duo-

from Latin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012