Source : Webster's Revised Unabridged Dictionary (1913)

Displease \Dis*please"\, v. t. [imp. & p. p. {Displeased}; p.
   pr. & vb. n. {Displeasing}.] [OF. desplaisir, whence F.
   d['e]plaisir displeasure; pref. des- (L. dis-) + plaisir to
   please. See {Please}, and cf. {Displeasure}.]
   1. To make not pleased; to excite a feeling of disapprobation
      or dislike in; to be disagreeable to; to offend; to vex;
      -- often followed by with or at. It usually expresses less
      than to anger, vex, irritate, or provoke.

            God was displeased with this thing.   --1 Chron.
                                                  xxi. 7.

            Wilt thou be displeased at us forever? --Psalms
                                                  lxxxv. 5 (Bk.
                                                  of Com.
                                                  Prayer).

            This virtuous plaster will displease Your tender
            sides.                                --J. Fletcher.

            Adversity is so wholesome . . . why should we be
            displeased therewith?                 --Barrow.

   2. To fail to satisfy; to miss of. [Obs.]

            I shall displease my ends else.       --Beau. & Fl.

   Syn: To offend; disgust; vex; annoy; dissatisfy; chafe;
        anger; provoke; affront.

Displeasing \Dis*pleas"ing\, a.
   Causing displeasure or dissatisfaction; offensive;
   disagreeable. -- {Dis*pleas"ing*ly}, adv. --
   {Dis*pleas"ing*ness}, n. --Locke.

Source : WordNet®

displeasing
     adj : causing displeasure or lacking pleasing qualities [ant: {pleasing}]