Where does “заборавити” come from?

заборавити (Serbo-Croatian) comes from Serbo-Croatian за, from Proto-Slavic za — behind, after; in , during; for, in exchange for,...

Ancestry of “заборавити”, step by step

Step	Language	Word	Meaning
1	Serbo-Croatian	за	for; behind, in back of, at; during
2	Proto-Slavic	za	behind, after; in , during; for, in exchange for,...