inertness

inert +‎ -ness

inertness (usually uncountable, plural inertnesses)

1. Lack of activity or exertion; habitual indisposition to action or motion

   Synonyms: sluggishness, apathy, insensibility

2. Absence of the power of self-motion; inertia.
3. (chemistry) Quality of being unreactive with other chemical compounds or elements.

• inertness in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• inertness in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

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