Related Clues:

• Calm and unruffled
• Hard to fluster
• Far from flustered
• Drug
• Meditative sect
• Spiritual path
• Imperturbable
• 'Put a sock in it!'
• Sedated
• Meditative religion
• Angry teacher's cry
• Not nervous
• "Put a sock in it!"
• Peacefully silent
• ''___ and the Art of Motorcycle Maintenance''