Where does “ἀρέσω” come from?

ἀρέσω (Byzantine Greek) comes from Ancient Greek ᾰ̓ρέσκω.

Ancestry of “ἀρέσω”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ᾰ̓ρέσκω	—

ἀρέσω — Etymology, Origin & Word History | Etymology Explorer