Related Clues:

• Very strong, as a stomach
• Did not throw the driver away, of course
• Moving inside, Cornelius is not subject to change
• Club thrown in disgust?
• Supported by press, actors are impregnable
• Convict gets outside a prison? It's very hard
• It's hard for Tory keeping awake
• It's hard to join actors' club
• Strong players joining club
• Press goes after theatrical group very hard
• The actors have to press hard
• Unassailable
• Extremely hardy
• Like some alibis and stomachs
• Very strong group of players unbreakable