The Collaborative International Dictionary of English v.0.48:

Discomfort \Dis*com"fort\, v. t. [imp. & p. p. Discomforted;
   p. pr. & vb. n. Discomforting.] [OF. desconforter, F.
   d['e]conforter, to discourage; pref. des- (L dis-) +
   conforter. See Comfort.]
   1. To discourage; to deject.
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            His funeral shall not be in our camp,
            Lest it discomfort us.                --Shak.
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   2. To destroy or disturb the comfort of; to deprive of quiet
      enjoyment; to make uneasy; to pain; as, a smoky chimney
      discomforts a family.
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