Related Clues:

• Hard to fluster
• Calm and relaxed
• Beatnik's 'all right'
• Beatnik's expletive
• 56, say
• Not nervous
• Endure a hot spell
• Prepare a quiche
• Like the proverbial cucumber
• Socially adept, in slang
• 'Groovy'
• Like laid-back jazz
• Use the oven
• Not exactly friendly
• "Sounds good"