1.Definition: resistant to guidance or discipline

"An obstinate child with a violent temper"

Related Adjective(s):contrary, perverse, wayward

2.Definition: stubbornly persistent in wrongdoing

Related Adjective(s):cussed, obdurate, unrepentant

3.Definition: tenaciously unwilling or marked by tenacious unwillingness to yield

Related Adjective(s):stubborn, unregenerate