Related Clues:

• Like Fonzie
• Far from relaxed
• Unfriendly
• On the cool side
• Far from cordial
• 'Nice!'
• More than cool
• Unmoved
• Like winter sidewalks
• Like many a fall day
• Hardly relaxed
• Unsocial
• Like an unfriendly stare
• Self-controlled
• "Nifty!"