πιστός2 πείθω pass. to be trusted or believed: of persons, faithful, trusty, true, Il., Hes., Attic:—in Persia οἱ πιστοί were Privy-councillors, "trusty and well-beloved, " Xen.; πιστὰ πιστῶν = πιστότατοι, Aesch. trustworthy, worthy of credit, Thuc., etc. of things, trustworthy, sure, of oaths, etc., Hom., etc.; οὐκέτι πιστὰ γυναιξίν no longer can one trust women, Od.; ἐλπὶς πιστὴ λόγῳ warranted by reason, Thuc. deserving belief, credible, probable, Hdt., Plat., etc. πιστόν, οῦ, as Subst., like πίστις II, a pledge, security, warrant, certainty, Soph., etc.; τὸ π. τῆς ἐλευθερίας Thuc.; τὸ π. ἔχοντες κἂν περιγενέσθαι feeling confidence that they should survive, Thuc.:—in pl., τὰ πιστὰ ποιεῖσθαι πίστιν ποιεῖσθαι, Hdt.; πιστὰ θεῶν, of oaths, Xen.; πιστόν or πιστὰ δοῦναι καὶ λαβεῖν to give and receive pledges, to interchange pledges, Xen., etc. act. like πίσυνος, believing, trusting in, relying on, τινι Theogn., Aesch., etc. obedient, Xen. faithful, believing, NTest. adv. πιστῶς, with good faith, persuasively Dem. with disposition to believe, Dem.