Adverbs for Severe

tyrannically; haughtily; brutally; needlessly; intolerably; abominably; barbarously; unwisely; senselessly; unreasonably; warrantably; properly; harshly; gravely; puritanically; rigorously; rigidly; uncompromisingly; inflexibly; unsparingly; arbitrarily; domineeringly; imperiously; sternly; unmitigatedly; unrelentingly; relentlessly; odiously; atrociously; detestably.