'Fierce' in the Bible

When He arrived at the other side in the country of the Gadarenes, two demon-possessed men coming out of the tombs met Him. They were so extremely fierce and violent that no one could pass by that way.

[and they will be] unloving [devoid of natural human affection, calloused and inhumane], irreconcilable, malicious gossips, devoid of self-control [intemperate, immoral], brutal, haters of good,

Be sober [well balanced and self-disciplined], be alert and cautious at all times. That enemy of yours, the devil, prowls around like a roaring lion [fiercely hungry], seeking someone to devour.

Therefore rejoice, O heavens and you who dwell in them [in the presence of God]. Woe to the earth and the sea, because the devil has come down to you in great wrath, knowing that he has only a short time [remaining]!”

Then the fourth angel poured out his bowl on the sun, and it was given power to scorch humanity with [raging] fire.