Where does “γυμνάζω” come from?

γυμνάζω (Ancient Greek) comes from Ancient Greek γυμνός, from Proto-Hellenic *gʷomnós.

γυμνάζω (Ancient Greek): to train naked; to train

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	γυμνός	naked, nude, unclad; unarmed, without armor,...
2	Proto-Hellenic	*gʷomnós	—

γυμνάζω — Etymology, Origin & Word History | Etymology Explorer