Related Clues:

• Inanimate
• Lacking liveliness
• Like neon and xenon
• Reclining
• Like neon and argon
• Opposite of active
• Like xenon and helium
• Perfectly still
• Like liquid nitrogen
• On the sidelines
• Not functioning
• Like objects in a Newtonian law
• Unable to react, as helium
• Not going anywhere?
• Like 103-Down