If you feel antipathetic towards someone or something, you strongly do not like them, or you stand against what they want. The feeling is big, not a small “I don’t fancy that.” It often takes to or towards: antipathetic to an idea, antipathetic towards a person. People use this word in careful writing more than in everyday talk. You will hear “I don’t like him” a hundred times before you hear “I feel antipathetic towards him.” Though actually, many speakers reach for hostile or “I can’t stand them” instead, because those sit more easily in the mouth. It can describe a person, a feeling, or a stance — not only a passing mood.