inertness

from WordNet (r) 3.0 (2006)

inertness
    n 1: immobility by virtue of being inert

from The Collaborative International Dictionary of English v.0.48

Inertness \In*ert"ness\, n.
   1. Lack of activity or exertion; habitual indisposition to
      action or motion; sluggishness; apathy; insensibility.
      --Glanvill.
      [1913 Webster]

            Laziness and inertness of mind. --Burke.
      [1913 Webster]

   2. Absence of the power of self-motion; inertia.
      [1913 Webster]