[syn: antagonistic, antipathetic, antipathetical]
The Collaborative International Dictionary of English v.0.48:
Antipathetic \An`ti*pa*thet"ic\, Antipathetical
\An`ti*pa*thet"ic*al\, a.
   Having a natural contrariety, or constitutional aversion, to
   a thing; characterized by antipathy; -- often followed by to.
   --Fuller.
   [1913 Webster]
WordNet (r) 3.0 (2006):
antipathetical
    adj 1: (usually followed by `to') strongly opposed;
           "antipathetic to new ideas"; "averse to taking risks";
           "loath to go on such short notice"; "clearly indisposed
           to grant their request" [syn: antipathetic,
           antipathetical, averse(p), indisposed(p),
           loath(p), loth(p)]
    2: characterized by antagonism or antipathy; "slaves
       antagonistic to their masters"; "antipathetic factions within
       the party" [syn: antagonistic, antipathetic,
       antipathetical]