Related Clues:

• Days-old
• Like a tough cookie?
• Like dated food
• Like day-old donuts
• Hard, as bread
• Heard too often
• Like old jokes
• Formulaic
• Flat, as cola
• Corny
• Clichéd
• Stuffy, as air
• Like 'Have a nice day!'
• Lacking originality
• In need of an update