duo-

prefix

two

Similar
di-bi-
OriginLatin duo →
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Meanings

prefix
  1. two

    Synonyms: di-, bi-

Synonyms & antonyms

prefixtwo

Similar
di-bi-
Also see
bi-twi-

Origin

  1. Latinduo“two”
  2. Englishduo-

PIE word *dwóh₁ Etymology tree Proto-Indo-European *dwóh₁ Proto-Italic *duō Latin duo English duo- From Latin duo (“two”).

More words from Latin

Full word history & related roots →

Translations

Italian duo-
  • duo-two
Portuguese duo-
  • duo-two
Spanish duo-
  • duo-two
Cite this entry
APA

duo-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/duo-

MLA

“duo-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/duo-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “duo-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/duo-.

Source: duo- on Wiktionary, CC BY-SA 4.0.