1. (adj)stubborn, obstinate, unregenerate tenaciously unwilling or marked by tenacious unwillingness to yield
2. (adj)cussed, obdurate, obstinate, unrepentant stubbornly persistent in wrongdoing
3. (adj)contrary, obstinate, perverse, wayward resistant to guidance or discipline "Mary Mary quite contrary"; "an obstinate child with a violent temper"; "a perverse mood"; "wayward behavior"
4. (verb)obstinate persist stubbornly
"he obstinates himself against all rational arguments"