The story
- Old English · inherited fromniþer-
- Middle English · inherited fromnither-
- English todaynether-
From Middle English nither-, neother-, from Old English niþer- (prefix), from niþer (“below, beneath, down, downwards, lower, in an inferior position”). Cognate with Dutch neder-, neer- (“down”), German nieder- (“down”). More at nether.
Etymology from Wiktionary, CC BY-SA 4.0.