1. showing excessive pride or arrogance; displaying hubris
Usage: formal

Examples

• The CEO’s hubristic belief that he could never fail led to the company’s downfall.
• Her hubristic attitude toward the competition cost her the championship.
• The politician’s hubristic promises proved impossible to keep.
• His hubristic dismissal of expert advice resulted in disaster.
• The general’s hubristic strategy ignored the enemy’s strengths.
• Their hubristic assumption that they were invincible was quickly proven wrong.