Strong's #5350: phtheggomai (pronounced ftheng'-gom-ahee)

probably akin to 5338 and thus to 5346; to utter a clear sound, i.e. (generally) to proclaim:--speak.

Thayer's Greek Lexicon:

́

phtheggomai

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.

Part of Speech: verb

Relation: probably akin to G5338 and thus to G5346

Usage:

This word is used 3 times:

 

Acts 4:18: "and commanded them not to speak at all nor teach in"
2 Peter 2:16: "for his iniquity: the dumb ass speaking with man's voice"
2 Peter 2:18: "For when they speak great swelling words of vanity, they allure through the lusts of the flesh,"