be (exceeding) glad, with exceeding joy, rejoice (greatly)

Strong’s Dictionary of Greek Words:

Greek:
ἀγαλλιάω
Transliteration:
agalliao
Phonic:
ag-al-lee-ah’-o
Meaning:
from agan (much) and 242; properly, to jump for joy, i.e. exult
KJV Usage:
be (exceeding) glad, with exceeding joy, rejoice (greatly)