Strong’s Greek
G743 — archaggelos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀρχάγγελος
archaggelos — pronounced ar-khang'-el-os
from 757 and 32; a chief angel:--archangel. see GREEK for 757 see GREEK for 32
2 occurrences in the KJV.
1 Thessalonians 4:16
For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
Jude 1:9
Yet Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.