Where does “athleticus” come from?

athleticus (Latin) comes from Ancient Greek ἀθλητικός, from Ancient Greek ἀθλητής, from Ancient Greek ἀθλέω, from Ancient Greek -έω, from Proto-Indo-European -éyeti, from Proto-Indo-European -yeti — Creates transitive imperfective verbs from roots.

Ancestry of “athleticus”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἀθλητικός	of or for an athlete, athletic
2	Ancient Greek	ἀθλητής	a combatant, champion, especially a prizefighter;...
3	Ancient Greek	ἀθλέω	to contend for a prize, combat, wrestle; to be an...
4	Ancient Greek	-έω	Used to form verbs from nouns, adjectives and...
5	Proto-Indo-European	-éyeti	Forms causative imperfective verbs from roots;...
6	Proto-Indo-European	-yeti	Creates transitive imperfective verbs from roots

Every word from Proto-Indo-European -yeti →