The story
- Proto-West Germanic · inherited from*blīþisi“joy, goodness, kindness”
- Old English · inherited frombliss
- Middle English · inherited frombliss
- English todaybliss
From Middle English bliss, from Old English bliss, variant of earlier blīds, blīþs (“joy, gladness”), from Proto-West Germanic *blīþisi (“joy, goodness, kindness”).
Etymology from Wiktionary, CC BY-SA 4.0.