Pigheaded (adjective)

Having or showing a stubborn and determined attitude and unwilling to change one's opinion or decision.

Origin:

The word pigheaded comes from the word "pig" referring to the animal known for its stubbornness, and "headed" meaning having a certain kind of head or mentality.

Examples:

1. He was pigheaded and refused to listen to reason.
2. She was pigheaded and wouldn't change her plans.
3. He was pigheaded and insisted on going his own way.
4. She was pigheaded and determined to finish the task.
5. The pigheadedness of the politicians prevented a compromise.