Related Clues:

• Well fixed
• In decline
• Like unfunny jokes
• Like noble gases
• Like rock-hard bread
• Listless
• Lethargic, perhaps
• Like radon
• Told and retold, perhaps
• Like krypton and xenon
• Languid
• Inanimate
• Like a day-old baguette
• Lacking liveliness
• Like neon and xenon