Related Clues:

• Navy unit
• Quick and graceful
• Houyhnhnm's creator
• Like the Wallendas
• Quick as a wink
• "Gulliver's Travels" author
• Gymnastically gifted
• Vigorously active
• Lively, especially for one's age
• Split-second
• Quick on the uptake
• Like gymnasts
• Expeditious
• Feeling one's oats
• Like a good gymnast