τὸν ἰητρὸν δοκέει μοι ἄριστον εἶναι πρόνοιαν ἐπιτηδεύειν → it appears to me a most excellent thing for the physician to cultivate prognosis
ἀξιόπιστος, ἀξιόχρεος, ἀξιόχρεως, δόκιμος, ἔμπιστος, εὔπιστος, ἐχέγγυος, ἠθαῖος, ἠθεῖος, πιστευτός, πιστικός, πίστιος, πιστός, σαφής, φερέγγυος
