Where does “gilt” come from?

gilt (Middle English) comes from Old English gylt, from Lithuanian gulti, from Proto-Kartvelian gwel- — snake.

Ancestry of “gilt”, step by step

Step	Language	Word	Meaning
1	Old English	gylt	guilt
2	Lithuanian	gulti	lie, lie down; fall ill, sick; wilt, droop
3	Proto-Kartvelian	gwel-	snake

gilt — Etymology, Origin & Word History | Etymology Explorer