Etymology

From Old Persian 𐎭𐎠𐎼𐎹𐎺𐎢𐏁 ‎(Dārayava(h)uš), Compound of 𐎭𐎠𐎼𐎹 ‎(dāraya-, “to hold”) +‎ 𐎺𐎢 ‎(va(h)u-, “good”), "he who holds firm the good", from Proto-Indo-European *dʰer- ‎(“to hold”).