Related Clues:

• Steady
• Mollify
• Make quiet
• Quiet
• 'Don't panic!'
• Soothe
• "Chill out!"
• “Remain calm”
• Exhortation for a panicky person
• Immobilize, as a sailboat
• "Stay calm"
• Make relaxed
• Call for calm
• 'Chill...'
• 'Keep calm'