Related Clues:

• Misbehave, with 'up'
• Don't just stand there
• It may be heroic
• Opera or ballet part
• Play a part or play part
• Division of play?
• Undertaking
• Play thing
• It might need to be cleaned up
• Charade
• House work?
• Respond to a stimulus
• Play part
• See 43-Across
• Make your move