inveterate
From LSJ
ἐπὶ τῷ μὴ κοινωνικῶς χρῆσθαι τοῖς εὐτυχήμασι → for not having used their success in a spirit of partnership
English > Greek (Woodhouse)
adj.
Lasting: P. and V. χρόνιος. Strong, fierce: P. ἰσχυρός. Hard to resist: P. and V. δύσμαχος, V. δυσπάλαιστος.