Related Clues:

• Participating
• Knowing, as a secret
• Part of the loop
• Having knowledge of
• Not clueless about
• Get __ a good thing
• Get __ the ground floor
• Not oblivious to
• Part of, as a plot
• Barge trailer?
• Part on the loop
• Start ___
• Zero ___
• Not excluded from
• Horn or zoom follower