The story
- Proto-West Germanic · inherited from*dusīg“stunned; dazed”
- Old English · inherited fromdysiġ“stupid, foolish”
- Middle English · inherited fromdysy
- English todaydizzy
From Middle English dysy, desy, dusi, from Old English dysiġ (“stupid, foolish”), from Proto-West Germanic *dusīg (“stunned; dazed”). Akin to West Frisian dize (“fog”), Dutch deusig, duizig (“dizzy”), duizelig (“dizzy”), German dösig (“sleepy; stupid”).
Etymology from Wiktionary, CC BY-SA 4.0.