Recalcitrant (adjective)

1. Stubbornly resistant to authority, control, or suggestions.
2. Stubbornly or defiantly disobedient.
3. Not yielding to treatment, influence, or control.

Origin:

Late 19th century: from latin recalcitrant- 'kicking back', from the verb recalcitrare, from re- 'back' + calcitrare 'to kick'.

Examples:

1. The recalcitrant employee refused to follow the company's policies and was eventually fired.
2. The recalcitrant horse refused to be tamed and had to be returned to the wild.
3. The recalcitrant child was constantly getting into trouble and refused to listen to his parents.
4. The recalcitrant government refused to yield to the demands of the protesters.
5. The recalcitrant patient refused to follow the doctor's instructions and eventually suffered serious health consequences.