τῖον

From LSJ

ἐὰν ᾖς φιλομαθής, ἔσει πολυμαθής → if you are studious, you will become learned

Source

French (Bailly abrégé)

impf. poét. de τίω.

Russian (Dvoretsky)

τῖον: impf. к τί ω.