Related Clues:

• Try to mediate, perhaps
• Performed as an understudy
• Get involved
• Do more than mediate
• Get involved with someone else's business
• Shoe without laces, e.g.
• Interfere with Ulster pets back there
• Intervene dramatically, or at a senior level
• Do more than listen
• Pinch-hit (for)
• Act as a substitute
• Become involved
• Easily donned, as attire
• Enter as a mediator
• Be a substitute