Etymology

From Proto-Indo-European *ánteros ‎(“other”). Cognate with Scots uther, ither ‎(“other”), Old Frisian ōther, ("other"; > North Frisian üđer, ööder, ouder), Old Saxon ōthar ‎(“other”), Old High German ander ‎(“other”), Old Norse annarr, øðr-, aðr- ‎(“other, second”), Gothic 𐌰𐌽𐌸𐌰𐍂 ‎(anþar, “other”), Old Prussian anters, antars ‎(“other, second”), Lithuanian antroks ‎(“other”, pronoun), Russian второ́й ‎(vtorój, “second”), Albanian ndërroj ‎(“to change, switch, alternate”), Sanskrit अन्तर ‎(ántara, “different”), Sanskrit अन्य ‎(anyá, “other, different”).