I. Pass., not to be trusted, and so:
1. of persons and their acts, not trusty, faithless, “ὑπερφίαλοι καὶ ἄ.” Il.3.106; “θεοῖσίν τ᾽ ἐχθρὲ καὶ ἀνθρώποισιν ἄπιστε” Thgn.601; “ἄ. ὡς γυναικεῖον γένος” E.IT1298; “ἄ. ληίστορες” Sammelb.4309.14 (iii B.C.); “δολοπλοκίαι” Thgn.226; “ἄ. ποιεῖν τινά” mistrusted, Hdt.8.22, cf. 9.98; “τὰ ἑαυτοῦ πιστὰ ἀ. ποιεῖν” X.An.2.4.7; “ἄπιστος ἑταιρείας λιμήν” S.Aj.683; θράσει ἀ. ἐπαιρόμενος by untrustworthy, groundless confidence, Th.1.120; shifty, unreliable, Pl.Lg.775d.
2. of reports and the like , incredible, dub. in Archil.74.5, cf. Pi.O.1.31, Hdt.3.80; “τέρας” A.Pr.832; “ἄ. καὶ πέρα κλύειν” Ar.Av.418; “ἄ. ἐνόμιζον εἰ . .” Ph.2.556; τὸ ἐλπίδων ἄ. undreamed of even in hope, S.Ph.868: Comp. “-ότερος, λόγος” Aeschin. 3.59: Sup., “πίστις ἀπιστοτάτη” And.1.67, cf. Pl.Ep.314b.
II. Act., mistrustful, incredulous, suspicious, “θυμὸς δέ τοι αἰὲν ἄ.” Od.14.150; “ὦτα . . ἀπιστότερα ὀφθαλμῶν” less credulous, Hdt.1.8; ἄ. πρὸς Φίλιππον distrustful towards him, D.19.27; ἄ. εἶ . . σαυτῷ you do not believe what you say yourself, Pl.Ap.26e; “ἤθη ἄ.” Id.Lg.705a; τὸ ἄ., = ἀπιστία, Th.8.66; “δούλοις πῶς οὐκ ἄπιστον;” Gorg.Pal.11.
b. in NT, unbelieving, 1 Ep.Cor.6.6, al.
2. disobedient, disloyal, S.Fr. 627: c. gen., A.Th.876; ἔχειν ἄπιστον . . ἀναρχίαν πόλει, i.e. ἀναρχίαν ἔχειν ἀπειθοῦσαν τῇ πόλει, ib.1035, cf. E.IT1476.
III. Adv. ἀπίστως:
1. Pass., beyond belief, “ἀ. ἐπὶ τὸ μυθῶδες ἐκνενικηκότα” Th. 1.21; οὐκ ἀ. not incredibly, Arist.Rh.Al.1438a22,1438b2.
b. treacherously, Ph.1.516.