Related Clues:

• Crane fly larva
• Dry piece of writing gets bad mark
• Dark mark/stain
• Twist tail off crustacean that's served up
• Struggle against power that's corrupt
• Black group in disgrace
• Ink mark
• Distort, twist
• Moral flaw
• Rorschach image
• Penny after fighting found buckle
• Spot of ink, paint or dirt
• Soak up ink that's black, large amount
• Mop up stain
• Bachelor set getting a black mark