Strong's #669: apophtheggomai (pronounced ap-of-theng'-om-ahee)
from 575 and 5350; to enunciate plainly, i.e. declare:--say, speak forth, utterance.
Thayer's Greek Lexicon:
̓́
apophtheggomai
1) to speak out, speak forth, pronounce
1a) not a word of everyday speech but one "belonging to dignified and elevated discourse"
Part of Speech: verb
Relation: from G575 and G5350
Citing in TDNT: 1:447, 75
Usage:
This word is used 3 times:
Acts 2:4: "Spirit gave them utterance."
Acts 2:14: "his voice, and said unto them, Ye men of Judea, and"
Acts 26:25: "I am not mad, most noble Festus; but I speak forth the words of truth and"