1. the quality of being impressive; the ability to make a strong, favorable effect on the mind or emotions
Usage: uncountable noun; often used to describe the impact of something grand, striking, or remarkable

Examples

• The impressiveness of the cathedral's architecture left visitors speechless.
• The athlete's performance demonstrated remarkable impressiveness on the world stage.
• The impressiveness of the fireworks display made it a memorable Fourth of July celebration.
• Critics praised the impressiveness of the director's debut film.
• The impressiveness of her presentation convinced the board to approve the project.
• The sheer impressiveness of the mountain range took our breath away.