1. a person or thing that makes something legitimate or acceptable

Examples

• The university served as a legitimizer for his unconventional research methods.
• She acted as a legitimizer for the new policy among skeptical employees.
• The endorsement from the famous scientist was a powerful legitimizer for the startup.
• Traditional media outlets often function as legitimizers of public opinion.
• The award became a legitimizer of his artistic achievements.
• Without a proper legitimizer, the movement struggled to gain credibility.