[ doo-oh, dyoo-oh ]
/ ˈdu oʊ, ˈdyu oʊ /

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.

Origin of duo

1580–90; < Italian < Latin: two

Definition for duo (2 of 2)


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

Origin of duo-

combining form of Greek dýo, Latin duo two
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for duo

British Dictionary definitions for duo (1 of 2)


/ (ˈdjuːəʊ) /

noun plural duos or dui (ˈdjuːiː)

  1. a pair of performers
  2. 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)


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

Word Origin and History for duo



1580s, "song for two voices," via either Italian or French, from Latin duo "two" (see two). Meaning "two people" (especially as an entertainment team) attested by 1887.

Online Etymology Dictionary, © 2010 Douglas Harper