1. the quality or state of being famous and respected for achievements or high position
Usage: formal

Examples

• The illustrousness of the Nobel Prize winners was evident at the ceremony.
• Her illustrousness in the field of medicine earned her international recognition.
• The university’s illustrousness attracted students from around the world.
• Despite his illustrousness, the professor remained humble and approachable.
• The family’s illustrousness dated back several generations of public service.
• The illustrousness of the award made it highly coveted among scientists.