Related Clues:

• Gets less firm
• Shows wear, as a couch
• Really sinks in
• Gives under pressure, but not entirely
• Declines temporarily
• Needs to slow down
• Sinks under pressure
• Becomes droopy
• Gets less taut
• Lacks firmness
• Wilts badly
• Loses tautness
• Grows slack
• Gives in to gravity, as a roof
• Droops a bit in the center