Where does “пятна́дцать” come from?
пятна́дцать (Russian) comes from Russian пять, from Old Church Slavonic пѧть, from Proto-Slavic pętь, from Proto-Indo-European pénkʷe — five.
Ancestry of “пятна́дцать”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Russian | пять | five; second-person singular imperative... |
| 2 | Old Church Slavonic | пѧть | five |
| 3 | Proto-Slavic | pętь | five |
| 4 | Proto-Indo-European | pénkʷe | five |
Words derived from “пятна́дцать”