Related Clues:

• Unwelcome visitor
• Exterminator's quarry
• Constant interrupter
• Persistent annoyer
• Bothersome one
• Bothersome type
• Genuine nuisance
• Telemarketer, perhaps
• Word with nail or back
• Brat or bug, e.g.
• Gnat or brat
• Asp, at times
• Mole, to a gardener
• Mite, moth or mole
• Nasty dog