an·tip·a·thy 
(ăn-tĭpə-thē)
(ăn-tĭpə-thē)n. pl. an·tip·a·thies
1. Extreme dislike; aversion or repugnance. See Synonyms at enmity.
2. A feeling of aversion: longstanding antipathies between two nations.
3. Inherent incompatibility or inability to mix: the antipathy between faith and reason; the antipathy of hydrocarbons and water.
[Latin antipathīa, from Greek antipatheia, from antipathēs, of opposite feelings : anti-, anti- + pathos, feeling; see PATHOS.]