'Grievous' in the Bible

And Jehovah did so; and there came grievous swarms of flies into the house of Pharaoh, and into his servants houses: and in all the land of Egypt the land was corrupted by reason of the swarms of flies.

behold, the hand of Jehovah is upon thy cattle which are in the field, upon the horses, upon the asses, upon the camels, upon the herds, and upon the flocks: there shall be a very grievous murrain.

Behold, to-morrow about this time I will cause it to rain a very grievous hail, such as hath not been in Egypt since the day it was founded even until now.

So there was hail, and fire mingled with the hail, very grievous, such as had not been in all the land of Egypt since it became a nation.

And the locusts went up over all the land of Egypt, and rested in all the borders of Egypt; very grievous were they; before them there were no such locusts as they, neither after them shall be such.