The story
- Old English · inherited frombehlehhan
- Middle English · inherited frombelahhen
- English todaybelaugh
From Middle English belahhen, beliȝen, from Old English behlehhan, behliehhan (“to deride, exult over”), equivalent to be- + laugh. Cognate with German belachen (“to laugh at”).
Etymology from Wiktionary, CC BY-SA 4.0.