1. A white color that has lost its brightness or purity due to oxidation, discoloration, or soiling; white that appears dull or discolored
The tarnished white silverware needed polishing.
A prataria branca manchada precisava ser polida.
2. Metaphorically, something white or pure in appearance that has been spoiled or compromised
Her tarnished white reputation was difficult to restore.
Sua reputação branca manchada foi difícil de restaurar.