Related Clues:

• Underground type
• Nag
• Termagant
• Problem for Petruchio
• Unwelcome rooter
• Security concern
• Suburban pest
• Undercover operator
• Subterranean pest
• Spymaster's worry
• Blemish
• Shakespearean title character
• You could see it on Marilyn's face
• Security problem
• ''The Wind in the Willows'' character