Where does “ἀμύντωρ” come from?

ἀμύντωρ (Ancient Greek) comes from Ancient Greek -τωρ, from Proto-Hellenic *-tōr.

Ancestry of “ἀμύντωρ”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	-τωρ	Used to form agent nouns
2	Proto-Hellenic	*-tōr	—

ἀμύντωρ — Etymology, Origin & Word History | Etymology Explorer