'Terribly' in the Bible

“Lord, have mercy on my son, for he is a lunatic (moonstruck) and suffers terribly; for he often falls into the fire and often into the water.

Now the centurion, and those who were with him keeping guard over Jesus, when they saw the earthquake and the things that were happening, they were terribly frightened and filled with awe, and said, “Truly this was the Son of God!”

After screaming out and throwing him into a terrible convulsion, it came out. The boy looked so much like a corpse [so still and pale] that many [of the spectators] said, “He is dead!”

And an angel of the Lord suddenly stood before them, and the glory of the Lord flashed and shone around them, and they were terribly frightened.