From Middle Persian [script needed] (anōšēn, “ambrosial, sweet”), from 𐭠𐭭𐭥𐭱 (anōš, “ambrosia”) + [script needed] (-ēn), from Old Persian *anauša- (“immortal”), from Proto-Iranian *an-auša- (“immortal”). Compare انوشه (anōša /anuše, “immortal”) and نوشیدن (nōšīdan /nušidan, “to drink”).