Related Clues:

• Of high intelligence
• Shoe phone user
• Highly intelligent
• Eligible for 1-Across
• Feel stung
• Like some bombs or cookies
• Steve Carell role
• Agent 99's partner
• TV's "Get _____"
• Like a member of Mensa
• TV spy Maxwell
• With 64-Down, wiseguys
• Mentally agile
• Upper-class?
• High in IQ