Where does “ἀββα” come from?

ἀββα (Ancient Greek) comes from Aramaic אבא, from Proto-Semitic ʔabw-, from Proto-Afroasiatic ʔab-.

ἀββα (Ancient Greek): father; title of respect given to abbots

Definitions

Step	Language	Word	Meaning
1	Aramaic	אבא	father, ancestor, progenitor; teacher; chief,...
2	Proto-Semitic	ʔabw-	father
3	Proto-Afroasiatic	ʔab-	—

ἀββα — Etymology, Origin & Word History | Etymology Explorer