μὴ μόνον τοὺς ἁμαρτάνοντας κόλαζε, ἀλλὰ καὶ τοὺς μέλλοντας κώλυε → punish not only those who do wrong, but those who intend to do so
P. and V. δυσχερής, ἄπορος, ἀμήχανος (rare P.), προσάντης, V. δυσπετής, Ar. and P. χαλεπός.
of ground: P. and V. τραχύς, P. χαλεπός.
it is difficult to do it: V. δρᾶν ἀμηχάνως ἔχει (Euripides, Fragment).
