Related Clues:

• Sharp, as an appetite
• Ingenious
• Like angles less than 90 degrees
• Less than 90 degrees, in geometry
• Percipient
• Tough to outwit
• Very flexible
• Fresh from honing
• Adjective for a gymnast
• Far from klutzy
• Severe, as pain
• It's never right
• Like severe pain
• Quick and nimble
• Like Cirque du Soleil performers