| 1 | Old French | precios | valuable, costly, precious, beloved, also... |
| 2 | Latin | pretiōsus | — |
| 3 | Latin | pretium | worth, price, value, cost; pay, hire, wage,... |
| 4 | Proto-Italic | pretjom | — |
| 5 | Proto-Indo-European | per- | before, in front; first; to go through |
| 6 | Proto-Indo-European | pr̥tós | passed , crossed |