Where does “Arethusa” come from?

Arethusa is the English name for the figure in Ancient Greek mythology Ἀρέθουσα, a nymph whose original meaning is unknown.

Ancestry of “Arethusa”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἀρέθουσα	—

Arethusa — Etymology, Origin & Word History | Etymology Explorer