σπουδαστικός
From LSJ
ἐν ταῖς ἀνάγκαις χρημάτων κρείττων φίλος → it is better in times of need to have friends rather than money, a friend in need is a friend indeed (Menander, Sententiae monostichoi 143)
English (LSJ)
ή, όν,
A zealous, earnest, opp. φιλοπαίσμων, Pl.R.452e; σπουδαστικώτεροι Arist.Rh.1391a25. Adv. -κῶς, ἔχειν Plu.2.613a.