Contrariety or opposition in feeling; settled aversion or dislike; repugnance; distaste.

Natural contrariety; incompatibility; repugnancy of qualities; as, oil and water have antipathy.

a feeling of intense dislike

the object of a feeling of intense aversion; something to be avoided; "cats were his greatest antipathy"

a strong or deep-seated aversion or dislike.

Antipathy is dislike for something or somebody, the opposite of sympathy. While antipathy may be induced by previous experience, it often exists without a rational cause-and-effect explanation being present to the individuals involved.