Related Clues:

• Stain
• Blacken
• Sully
• Besmirch
• Taint
• Silver flaw
• Sully, as a reputation
• Grow dull
• The silver screen
• Lose luster
• Stain, as a reputation
• Become dull and discoloured
• Become dull or blemished
• Stain or discolour, say metal
• Become discoloured