obstinate
Definitions
Stubbornly refusing to change one's opinion or chosen course of action.
Difficult to overcome, subdue, or treat.
Examples
Despite the overwhelming evidence, he remained obstinate in his refusal to admit he was wrong.
The obstinate mule refused to move, no matter how much the farmer pulled on the rope.
Her obstinate personality made it difficult for the team to reach a consensus on the project.
Synonyms
stubborn headstrong mulish inflexible obdurate pigheaded intransigent
Antonyms
flexible compliant amenable yielding pliant tractable submissive