Adverbs for Obdurate

grossly; tenaciously; sullenly; perversely; dreadfully; shockingly; dogmatically; austerely; stiffly; uncompromisingly; tyrannically; puritanically; cruelly; bitterly; unaccountably; unbearably; intolerably; sternly; stubbornly; incorrigibly; implacably; terribly; harshly; roughly; callously; mulishly; cantankerously.