The Collaborative International Dictionary of English v.0.48:

Disuse \Dis*use"\ (?; see Dis-), v. t. [imp. & p. p.
   Disused; p. pr. & vb. n. Disusing.]
   1. To cease to use; to discontinue the practice of.
      [1913 Webster]

   2. To disaccustom; -- with to or from; as, disused to toil.
      "Disuse me from . . . pain." --Donne.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disuse \Dis*use"\, n.
   Cessation of use, practice, or exercise; inusitation;
   desuetude; as, the limbs lose their strength by disuse.
   [1913 Webster]

         The disuse of the tongue in the only . . . remedy.
                                                  --Addison.
   [1913 Webster]

         Church discipline then fell into disuse. --Southey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disuse
    n 1: the state of something that has been unused and neglected;
         "the house was in a terrible state of neglect" [syn:
         neglect, disuse]

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "disuse":
   abandonment, abjure, absentation, antiquation, casting away,
   cessation, come off, cut out, desist, desuetude, discontinue, drop,
   evacuation, fogyishness, forsaking, give over, give up,
   have done with, jettison, jettisoning, leave off, leaving, let go,
   nol-pros, not pursue with, old-fashionedness, old-fogyishness,
   out-of-dateness, pulling out, put behind one, quit, relinquish,
   renounce, resign, staleness, stodginess, stop, stuffiness,
   superannuation, throwing overboard, unfashionableness, waive,
   withdrawal