1. damaged or spoiled the appearance or quality of something
Usage: past tense and past participle of ‘mar’

Examples

• The beautiful painting was marred by a large scratch.
• Rain marred the outdoor wedding ceremony.
• His reputation was marred by the scandal.
• The wooden table was marred with water stains.
• The celebration was marred by unexpected bad news.
• Graffiti had marred the historic building’s facade.
• Her perfect record was marred by one mistake.