Related Clues:

• Knowing about
• 'I'm ___ you now!'
• Get ___ (board)
• Appended
• Aware of, slangily
• John Lennon's middle name
• Lennon's love
• Not duped by
• What might follow catch or latch
• Warbler Yoko
• '___ Box' (1992 pop music release)
• Cognizant of
• Palindromic singer
• See 71-Across
• In on