rith

From Middle English rīth (“a small stream”), rithe, from Old English rīþ m (“a small stream”), rīþe f, from Proto-West Germanic *rīþ, from Proto-Germanic *rīþaz, *rīþǭ (“stream, beck, brook”), from Proto-Indo-European *h₁rey- (“to arise, arise”).

Cognate with Old Frisian rīth, rīd (“stream, beck”), Old Saxon rīth (“stream, torrent”) (> Middle Low German rîde), Old Dutch rīth (“stream, beck”), German -reide (“stream”, in placenames).