Source : Webster's Revised Unabridged Dictionary (1913)

Disoblige \Dis`o*blige"\, v. t. [imp. & p. p. {Disobliged}; p.
   pr. & vb. n. {Disobliging}.] [Pref. dis- + oblige: cf. F.
   d['e]sobliger.]
   1. To do an act which contravenes the will or desires of; to
      offend by an act of unkindness or incivility; to
      displease; to refrain from obliging; to be unaccommodating
      to.

            Those . . . who slight and disoblige their friends,
            shall infallibly come to know the value of them by
            having none when they shall most need them. --South.

            My plan has given offense to some gentlemen, whom it
            would not be very safe to disoblige.  --Addison.

Source : WordNet®

disoblige
     v 1: to cause inconvenience or discomfort to; "Sorry to trouble
          you, but..." [syn: {trouble}, {put out}, {inconvenience},
           {discommode}, {incommode}, {bother}]
     2: ignore someone's wishes [ant: {oblige}]