θρησκός

From LSJ

κακοὶ μάρτυρες ἀνθρώποισιν ὀφθαλμοὶ καὶ ὦτα βαρβάρους ψυχὰς ἐχόντων → eyes and ears are poor witnesses for men if their souls do not understand the language (Heraclitus Phil.: Fr. B 107; Testimonia: Fragment 16, line 6)

Source

English (Strong)

probably from the base of θροέω; ceremonious in worship (as demonstrative), i.e. pious: religious.

English (Thayer)

(T WH θρησκός, cf. (Tdf. Proleg., p. 101); Winer's Grammar, § 6,1e.; Lipsius, Grammat. Untersuch., p. 28), θρησκου, ὁ, fearing or worshipping God; religious (apparently from τρέω to tremble; hence, properly, trembling, fearful; cf. J. G. Müller in Theol. Studien und Kritiken for 1835, p. 121; on the different conjectures of others, see Passow, under the word (Curtius, § 316 connects with θρα; hence, 'to adhere to,' 'be a votary of'; cf. Vanicek, p. 395)): Trench, § xlviii.)