ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας → I shall describe those symptoms, since I myself had the disease and witnessed as well what others were suffering
P. and V. ἄβουλος, Ar. and P. ἀνόητος, P. ἀπερίσκεπτος, V. ἄκριτος; see rash, foolish.
off one's guard: P. and V. ἀφύλακτος, ἄφρακτος.