Related Clues:

• Drunk on innocuous beverage but won't admit it
• Press goes after theatrical group very hard
• The actors have to press hard
• Armoured
• Impermeable - unbreakable
• Proof against leaking
• Without loopholes
• Rigid, as a contract
• Extremely hardy
• Like some alibis and stomachs
• Impregnable
• Very strong group of players unbreakable
• Firm and unchangeable
• After stiff drink, explains arid landscape in desert
• One boy dressed as a monitor, for example