Related Clues:

• Most imperturbable
• Least perturbable
• Most impressive
• The Fonz, compared to the rest
• Most unflappable
• Least ruffled
• Least worried
• Most suave
• Most chic
• Least ardent boy taking bird out
• Most hip
• Maximally hip
• Most fashionable bird embracing the French
• Most laid-back
• Maximally neat