Inert

{{wiktionary|inert|inertness}}

Inert may refer to:

• Chemically inert, not chemically reactive
• Inert gas
• Noble gas, historically called inert gas
• Inert knowledge, information which one can express but not use
• Inert ingredient, a component of the excipient of a pharmaceutical drug
• Inert munition, a round that does not contain any energetic material
• Inert prime, a type of behaviour of a prime under an algebraic extension
• Inert waste, waste which is neither chemically nor biologically reactive and will not decompose