Where does “duo” come from?
duo (French) comes from Italian duo, from Latin duō, from Proto-Italic duō, from Proto-Indo-European dwóh₁ — two.
duo (French): duo; duet
Ancestry of “duo”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Italian | duo | Obsolete form of due; duo; duet |
| 2 | Latin | duō | — |
| 3 | Proto-Italic | duō | two |
| 4 | Proto-Indo-European | dwóh₁ | two |