Related Clues:

• Sound the alarm
• Notify in advance
• Brit's billboard
• Honk at, perhaps
• Give an alert (to)
• Guidance
• It's typically easier to give than take
• 'Dear Abby' offering
• Provide counsel
• Shoot off a flare, e.g.
• Notify of peril
• Alert to danger
• See 2 Down
• Serve notice
• Premonish