Related Clues:

• Chemically nonreactive
• Phlegmatic
• Couchbound, perhaps
• Utterly lethargic
• Free from anxiety
• Vegging out
• Having no effect
• Chemically quiet
• In repose
• Hard to get a reaction out of
• Unable to react chemically
• Hard to combine, chemically
• Nonreactive, as some gases
• Like dead weight
• Nonreactive, chemically