The story
- Proto-Germanic · inherited from*regnagaz“rainy”
- Proto-West Germanic · inherited from*regnag
- Old English · inherited fromreġniġ
- Middle English · inherited fromreyny
- English todayrainy
From Middle English reyny, from Old English reġniġ, from Proto-West Germanic *regnag, from Proto-Germanic *regnagaz (“rainy”), equivalent to rain + -y. Cognate with Saterland Frisian rienig (“rainy”), West Frisian reinich (“rainy”), Dutch regenig (“rainy”), German regnig (“rainy”), Swedish regnig (“rainy”).
Etymology from Wiktionary, CC BY-SA 4.0.