ἐκμανθάνειν
From LSJ
ἄνευ γὰρ φίλων οὐδεὶς ἕλοιτ᾽ ἂν ζῆν, ἔχων τὰ λοιπὰ ἀγαθὰ πάντα → without friends no one would choose to live, though he had all other goods
Greek > English (Woodhouse Verbs Reversed)
(see also ἐκμανθάνω): be acquainted with, learn by heart, learn by rote