#5350 φθέγγομαι phtheggomai {ftheng'-gom-ahee}

 probably akin to G5338 and thus to G5346; TDNT - n/a; v

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) to give out a sound, noise or cry
    1a) of any sort of sound or voice, whether of man or of animal or
        inanimate object as thunder, musical instruments, etc.

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - speak 3; 3

—Exhaustive Concordance (KJV Translation Frequency & Location)