Adverbs for Tenacious

resolutely; grimly; uncompromisingly; indomitably; stiffly; fanatically; inexplicably; disagreeably; ungraciously; tactlessly; surprisingly; churlishly; grossly; vexatiously; stubbornly; obstinately; piously; dogmatically; doctrinally; doggedly; toughly; persistently; obdurately.