Where does “fy” come from?

fy (Middle English) comes from Old French fi, from Latin fi, from Latin facio, from Proto-Italic fakjō, from Proto-Italic *θakjō, from Proto-Indo-European *dʰh₁k-yé-ti, from Proto-Indo-European dʰeh₁- — to do, put, place.

Ancestry of “fy”, step by step

StepLanguageWordMeaning
1Old Frenchfi—
2Latinfipah!, pooh!, foh!, bah!, an expression of...
3LatinfacioI do; I make, construct, fashion, frame, build,...
4Proto-Italicfakjōto make
5Proto-Italic*θakjō—
6Proto-Indo-European*dʰh₁k-yé-ti—
7Proto-Indo-Europeandʰeh₁-to do, put, place

Words derived from “fy”

Every word from Proto-Indo-European dʰeh₁- →Every word from Proto-Indo-European *dʰh₁k-yé-ti →Every word from Proto-Italic *θakjō →