Related Clues:

• 'Nice!'
• "Wow!"
• 'Peachy!'
• 'Sounds swell!'
• Like many a fall day
• "Swell!"
• Word of approval
• 'Terrif!'
• Self-controlled
• "Nifty!"
• Beatnik's 'groovy'
• Not nerdy
• Calm and controlled
• 'Pretty amazing!'
• In the 40's, say