1. Defying recognition as e.g. because of damage or alteration
   - unrecognizable

1. Beyond recognition; in an unrecognizable manner
   - unrecognizably, unrecognisably [Brit, Cdn], unrecognizable

See also: unidentifiable

• cluster bean
• cluster bomb
• cluster bomblet
• cluster headache
• cluster of differentiation 4
• cluster of differentiation 8
• clustered
• clustered bellflower
• clustered lady's slipper
• clustered poppy mallow
• clustering
• clutch
• clutch bag
• clutch pedal
• clutches
• clutter
• clutter up
• cluttered
• clv
• clx
• clxv
• clxx
• clxxv
• clxxx
• Clyde