tough
From LSJ
αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)
English > Greek (Woodhouse)
adjective
P. and V. στερεός, Ar. and V. στερρός. V. στυφλός, περισκελής.
stubborn: P. and V. σκληρός, αὐθάδης.
tough as maple: Ar. σφενδάμνινος (Acharnians 181).
tough as oak: Ar. πρίνινος (Acharnians 180).