Vainglory (noun)

Excessive or ostentatious pride in one's own achievements, abilities, or possessions.

Origin:

The word "vainglory" is derived from the old french word "vaine gloire" meaning empty or vain glory.

Examples:

1. He was consumed by vainglory and always had to be the center of attention.
2. His vainglory made him unbearable to be around.
3. His vainglory blinded him to his own faults.
4. Vainglory is a sin of pride.
5. Vainglory is a dangerous trait that can lead to downfall.