'Fierce' in the Bible

and as they were sailing He fell asleep. Then a fierce windstorm came down on the lake; they were being swamped and were in danger.

And if Satan really has engaged in fierce conflict with himself, how shall his kingdom stand?--because you say that I expel demons by the power of Baal-zebul.

And they were the more fierce, saying, He stirreth up the people, teaching throughout all Jewry, beginning from Galilee to this place.