duo
/ˈdu.oʊ/noun
duo is spelled D-U-O: 3 letters and 2 syllables. It appears 12 times per million words in written English, the 6,230th most frequent word form (wordfreq, 2021 data). As a noun, duo means “Two people who work or collaborate together as partners; especially” (English Wiktionary, September 2026). The plural of duo is duos.
How many letters and syllables are in duo?
| Letters | 3: D-U-O |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 12 times per million words; the 6,230th most frequent word form |
| Wrong spellings searched | none measured in search |
| Same letters |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is duo?
Duo appears 12 times per million words in written English, the 6,230th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce duo?
- UK /ˈdjuː.əʊ/
- UK /ˈd͡ʒuː.əʊ/
- US /ˈdu.oʊ/
Duo has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-duo.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with duo?
No other word on PlainSpell ends in the same sounds as duo (/uoʊ/).
Spelled with the same letters in another order: oud, udo.
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of duo
- duos plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does duo mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Two people who work or collaborate together as partners; especially
- 2
Two musicians who perform music together.
- 3
Any pair of people.
- 4
Any cocktail consisting of a spirit and a liqueur.
- 5
A meal with two paired components.
The duo of pork consisted of a smoked sausage and a shoulder joint.
- 6
A song in two parts; a duet.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Duo in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | duo |
| German | Duo |
| Portuguese | dupla, par , duo- |
| Spanish | dúo, dupla, equipo de dos , duo- |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does duo come from?
From French duo or Italian duo, from Latin duo (“two”), from Proto-Italic *duō, from Proto-Indo-European *dwóh₁. Doublet of two, which was inherited via Proto-Germanic.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).