Related Clues:

• Indifferent response
• Okay
• Lacking brightness or color
• Boring
• No so great
• Tiresome
• 'Eh'
• No longer fresh
• Lacking originality, as a joke
• Words of boredom
• No longer novel
• Lusterless
• 'Been better, been worse'
• Past the expiration date
• In need of freshening