Antipathy

/ænˈtɪp.ə.θi/ noun easy

A strong, deep-seated feeling of dislike or aversion toward someone or something.

The senator's antipathy toward the proposed bill was obvious from the way he refused to even read it aloud.

Memory Trick

'Anti-' (against) plus 'pathy' (feeling, as in 'sympathy') — antipathy is a feeling turned against someone, the mirror opposite of sympathy.