5350 phthéggomai – properly, to make a generic or unintelligible sound (resembling the whinny of a horse, LS); (figuratively) to speak in a way that is not understandable to the listener ("unintelligible").

STRONGS NT 5350: φθέγγομαι

φθέγγομαι; 1 aorist participle φθεγξάμενος; (φέγγος (but cf. Vanicek, p. 1176), ΦΑΩ); deponent middle; from Homer down;

1. to give out a sound, noise, or cry; used by the Greeks of any sort of sound or voice, whether of man or animal or inanimate object — as of thunder, musical instruments, etc.; (φθέγγεσθαι denotes sound in its relation to the hearer rather than to its cause; the μέγα λαλῶν is a braggart, the μέγα φθεγγόμενος. is a lofty orator; Schmidt, Syn., chapter 1 § 53).

2. to proclaim; to speak, utter: Acts 4:18; ὑπέρογκα, 2 Peter 2:18 (ἄδικα, Wis. 1:8); ὑποζύγιον, ἄφωνον ἐν ἀνθρωπίνῃ φωνή φθεγξάμενον, 2 Peter 2:16. (Compare: ἀποφθέγγομαι.)



speak.

Probably akin to pheggos and thus to phemi; to utter a clear sound, i.e. (generally) to proclaim -- speak.

see GREEK phemi

see GREEK pheggos

εφθέγξατο φθεγγεσθαι φθέγγεσθαι φθέγγεσθε φθέγγεται φθεγγόμεναι φθεγγομενοι φθεγγόμενοι φθέγξαιτο φθεγξαμενον φθεγξάμενον φθεγξάμενος φθέγξασθε φθεγξάσθωσαν φθέγξεται φθέγξομαι φθέγξονται φθειριεί φθειρίζει phthengesthai phthéngesthai phthengomenoi phthengómenoi phthenxamenon phthenxámenon