Where does “losenja” come from?

losenja (Old Spanish) comes from Occitan lauzenja, from Old French losenge, from Frankish *lausungu, from Proto-Germanic *lausungō.

Ancestry of “losenja”, step by step

Step	Language	Word	Meaning
1	Occitan	lauzenja	—
2	Old French	losenge	flattery; especially in order to trick or...
3	Frankish	*lausungu	—
4	Proto-Germanic	*lausungō	—

losenja — Etymology, Origin & Word History | Etymology Explorer