Related Clues:

• Dilate - jolly good!
• Expand - big wig
• Excellent! - become larger
• Smashing!
• Smashing, terrific
• Spiffing!
• ''Outstanding!''
• A1
• Fine as can be
• Grow, as a grass-roots movement
• Marvellous!
• Prefix with "model" or "star"
• ''Fantastic!''
• ''Oh, great!''
• Splendid!