The Collaborative International Dictionary of English v.0.48:

Discontent \Dis`con*tent"\, v. t. [imp. & p. p. Discontented;
   p. pr. & vb. n. Discontenting.]
   To deprive of content; to make uneasy; to dissatisfy.
   --Suckling.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Discontenting \Dis`con*tent"ing\, a.
   1. Discontented. [Obs.] --Shak.
      [1913 Webster]

   2. Causing discontent; dissatisfying. --Milton.
      [1913 Webster]