Intentionally causing or reveling in pain and suffering; merciless, heartless.
Cool; awesome; neat.
Harsh; severe.
To a great degree; terribly.
To violently provoke (a child) in the belief that this will make them more assertive.
To spoil or ruin (one's chance of success)
Unrelenting or unyielding in severity.
Unremitting, steady and persistent.