inertness

From inert +‎ -ness.

• Audio:

  (file)

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.

• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “inertness”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
• “inertness”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• tennisers