Related Clues:

• Dennis' tag
• Impending danger
• Blackmail tactic
• Menacing words
• Sand trap, e.g.
• Dangerous person
• It might be idle
• Hank Ketcham's Dennis, e.g.
• Endangerment
• Menacing statement
• Golf course obstacle, e.g.
• Declaration ending 'or else!'
• Growl at, say
• Put in peril
• ___ level