Τί γὰρ γένοιτ' ἂν ἕλκος μεῖζον ἢ φίλος κακός; → What wound is greater than a false friend?
P. ἄλυτος (Plato), ἀδιάλυτος (Plato), V. ἄρρηκτος, δύσλυτος, δυσεξήνυστος.