tough
From LSJ
Ἀναβάντα γὰρ εἰς τὴν ἀκρόπολιν, καὶ διὰ τὴν ὑπερβολὴν τῆς λύπης προσκόψαντα τῷ ζῆν, ἑαυτὸν κατακρημνίσαι → For he ascended the acropolis and then, because he was disgusted with life by reason of his excessive grief, cast himself down the height
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).