Possible Clues:

• Being supple put a match to high explosive
• Don -, opera by Verdi
• Of body, flexible and supple
• Flexible split heralded in part
• Flexible like Shelley's spirit, though not at first
• Having been fired, ambassador is quick to move
• Large Italian male is supple
• Gracefully supple
• "Enlightened" cardinal showing grace
• Turned on gas light