1. the quality of being stubborn and refusing to change one’s opinion or course of action

Examples

• His obstinacy in refusing help made the situation worse.
• The child’s obstinacy about bedtime frustrated her parents.
• Despite evidence to the contrary, she maintained her position with remarkable obstinacy.
• The negotiation failed due to both sides’ obstinacy.
• His obstinacy was both his greatest strength and weakness.
• The teacher admired the student’s obstinacy in solving difficult problems.