The story
- Proto-West Germanic · inherited from*dauwag
- Old English · inherited fromdēawiġ
- Middle English · inherited fromdewy
- English todaydewy
From Middle English dewy, deuhy, from Old English dēawiġ, from Proto-West Germanic *dauwag, *dauwīg, equivalent to dew + -y.
Etymology from Wiktionary, CC BY-SA 4.0.