Adverbs for Arbitrary

obdurately; positively; relentlessly; sternly; neatly; unreasonably; excessively; unbelievably; offensively; dangerously; alarmingly; overwhelmingly; extraordinarily; despotically; domineeringly; intolerably; paternally; patriarchally; dictatorially; imperiously; presumptuously; harshly; strictly; severely; tyrannically; oppressively; cruelly; haughtily.