Synonyms for Antipathetic (same or very similar meaning)
WordNet sense 1 ((usually followed by `to') strongly opposed):
averse, indisposed, loath, loth, antipathetical
WordNet sense 2 (unwilling because of mild dislike or disapproval):
disinclined
WordNet sense 3 (characterized by antagonism or antipathy):
antagonistic
WordNet sense 4 (characterized by enmity or ill will):
hostile
From the ODE community, based on WordNet
add/edit