The story
- Proto-West Germanic · inherited from*faimag
- Old English · inherited fromfāmiġ
- Middle English · inherited fromfomy
- English todayfoamy
From Middle English fomy, from Old English fāmiġ, fǣmiġ (“frothy, foamy”), from Proto-West Germanic *faimag, *faimīg, equivalent to foam + -y.
Etymology from Wiktionary, CC BY-SA 4.0.