ἀξιόπιστος

ἄξιος (áxios) +‎ πείθομαι (peíthomai, “to trust”) +‎ -ος (-os)

ᾰ̓ξῐόπῐστος • (axiópistos) m or f (neuter ᾰ̓ξῐόπῐστον); second declension

1. trustworthy

   Synonym: πιστός (pistós)

   • 349 BCE, Demosthenes, First Olynthiac 3:

     ἀξιόπιστος δ’ ἂν εἰκότως φαίνοιτο

     axiópistos d’ àn eikótōs phaínoito

     he would naturally appear trustworthy

   • 430 BCE – 354 BCE, Xenophon, Memorabilia 1.5.2:

     εἰ δ’ ἐπὶ τελευτῇ τοῦ βίου γενόμενοι βουλοίμεθά τῳ ἐπιτρέψαι ἢ παῖδας ἄρρενας παιδεῦσαι ἢ θυγατέρας παρθένους διαφυλάξαι ἢ χρήματα διασῶσαι, ἆρ’ ἀξιόπιστον εἰς ταῦθ’ ἡγησόμεθα τὸν ἀκρατῆ;

     ei d’ epì teleutêi toû bíou genómenoi bouloímethá tōi epitrépsai ḕ paîdas árrhenas paideûsai ḕ thugatéras parthénous diaphuláxai ḕ khrḗmata diasôsai, âr’ axiópiston eis taûth’ hēgēsómetha tòn akratê?

     If, coming on the end of life, we wanted to entrust to someone the teaching of our sons or the guarding of our daughters or the maintenance of our possessions, would we consider an immoderate man to be trustworthy enough for this?

• “ἀξιόπιστος”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press