1. providing strong evidence of guilt or wrongdoing; incriminating
2. severely critical or disapproving

Examples

• The witness provided damning testimony against the defendant.
• The leaked emails contained damning evidence of corruption.
• Her silence was damning in itself.
• The report gave a damning assessment of the company’s practices.
• The photographs were damning proof of his involvement.
• Critics wrote damning reviews of the new movie.
• The investigation revealed damning details about the scandal.