Quick Definition
ἀποφθέγγομαι v. I speak out, declare
Strong's Definition
to enunciate plainly, i.e. declare
Derivation: from G575 (ἀπό) and G5350 (φθέγγομαι);
KJV Usage: say, speak forth, utterance
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀποφθέγγομαι; 1 aor. ἀπεφθεγξάμην ; to speak out, speak forth, pronounce, not a word of every-day speech, but one “belonging to dignified and elevated discourse, like the Lat. profari, pronuntiare; properly it has the force of to utter or declare one’s self, give one’s opinion, (einen Ausspruch thun), and is used not only of prophets (see Kypke on Acts ii. 4,— adding from the Sept. Ezek. xiii. 9; Mic. v. 12; 1 Chr. xxv. 1), but also of wise men and philosophers (Diog. Laért. 1,63; 73; 79; whose pointed sayings the Greeks call ἀποφθέγματα, Cic. off. 1, 29)”; [see φθέγγομαι]. Accordingly, “it is used of the utterances of the Christians, and esp. Peter, on that illustrious day of Pentecost after they had been fired by the Holy Spirit, Acts ii. 4, 14; and also of the disclosures made by Paul to [before] king Agrippa concerning the ἀποκάλυψις κυρίου that had been given him, Acts xxvi. 25.” Win. De verb. comp. ete. Pt. iv. p. 16.
Mounce Concise Greek Dictionary
ἀποφθέγγομαι apophthengomai 3x
to speak out, declare, particularly solemn, weighty, or pithy sayings, Acts 2:4, 14; 26:25*
Abbott-Smith Greek Lexicon
† ἀπο-φθέγγομαι,
[in LXX for נבא, etc.;]
to speak forth, give utterance: Ac 2:4, 14 26:25 (MM, s.v.).†
Moulton & Milligan — Vocabulary of the Greek NT
ἀποφθέγγομαι occurs thrice in Vettius Valens, where the editor renders vaticinari: p. 753} ἐν ἱεροῖς κάτοχοι γίνονται ἀποφθεγγόμενοι ἢ καὶ τῇ διανοίᾳ παραπίπτοντες, 121° ἀποφθεγγομένους ἢ μανιώδεις ἢ προγνωστικοὺς ἀποτελοῦσιν, and 113} μανιώδεις ἐκστατικοὺς πτωματικοὺς ἀποφθεγγομένους ἀπερyafovrat—he refers to Manetho i, 237. This is an extension in malam partem of the mantic note which Winer (a/. Grimm-—Thayer) finds in the verb.
Liddell-Scott-Jones — Greek-English Lexicon
ἀποφθέγγομαι (apophthengomai) — to declare. ἀπο-φθέγγομαι, speak one's opinion plainly, [Refs 2nd c.AD+]; utter an apophthegm, [Refs 1st c.BC+]: metaphorically of vessels when struck, ring, σαπρὸν ἀ.[Refs 2nd c.AD+]
II. chant hymns, [Refs]