Where does “یکدیگر” come from?
یکدیگر (Persian) comes from Persian دیگر, from Proto-Iranian dwitī́yakarah, from Proto-Iranian dwitī́yah, from Proto-Indo-Iranian dwitī́yas, from Proto-Indo-European dwitíyos, from Proto-Indo-European dwi-, from Proto-Indo-European dwóh₁ — two.
یکدیگر (Persian): each other, one another
Ancestry of “یکدیگر”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Persian | دیگر | other; another; no more |
| 2 | Proto-Iranian | dwitī́yakarah | second, another; another time |
| 3 | Proto-Iranian | dwitī́yah | second |
| 4 | Proto-Indo-Iranian | dwitī́yas | second |
| 5 | Proto-Indo-European | dwitíyos | — |
| 6 | Proto-Indo-European | dwi- | two; apart, asunder |
| 7 | Proto-Indo-European | dwóh₁ | two |