Where does “喼” come from?

喼 (Chinese) comes from English cap, from Middle English cappe, from Old English cæppe, from Proto-West Germanic *kappijā.

Ancestry of “喼”, step by step

Step	Language	Word	Meaning
1	English	cap	A close-fitting hat, either brimless or peaked; A...
2	Middle English	cappe	cap; hat; A bandage or other covering to protect...
3	Old English	cæppe	hat
4	Proto-West Germanic	*kappijā	—