The story
- Proto-West Germanic · inherited from*niþernassī
- Old English · inherited fromniþernes“deepness, the bottom, lowness, a low position”
- Middle English · inherited fromnethernesse
- English todaynetherness
From Middle English nethernesse, from Old English niþernes (“deepness, the bottom, lowness, a low position”), from Proto-West Germanic *niþernassī, equivalent to nether + -ness. Cognate with Old High German nidarnassi, nidarnessi (“damnation”).
Etymology from Wiktionary, CC BY-SA 4.0.