Where does “festeren” come from?

festeren (Dutch) comes from Middle Dutch festeren, from Old French fester, from Medieval Latin festare.

festeren (Dutch): Obsolete form of fêteren

Definitions

Step	Language	Word	Meaning
1	Middle Dutch	festeren	—
2	Old French	fester	—
3	Medieval Latin	festare	—

festeren — Etymology, Origin & Word History | Etymology Explorer