Verbs

(v)obstinatepersist stubbornly“he obstinates himself against all rational arguments”

Adjectives

(a)stubborn, obstinate, unregeneratetenaciously unwilling or marked by tenacious unwillingness to yield
(s)cussed, obdurate, obstinate, unrepentantstubbornly persistent in wrongdoing
(s)contrary, obstinate, perverse, waywardresistant to guidance or discipline“Mary, Mary, quite contrary”, “an obstinate child with a violent temper”, “a perverse mood”, “wayward behavior”