Related Clues:

• Actor's improvisation
• "Stick to the script!" elicitor
• Spontaneous extra line in rap
• Ditch the teleprompter
• Embrace spontaneity, in a way
• Wing it at the mic
• Unrehearsed remark
• Impromptu atomic construct erected following loss of uranium
• Compose on the fly
• Cut the cards, perhaps
• Respond in an improv class
• A Democrat and Liberal wing it
• Act extempore
• Make-up artist's talent
• Improv technique