Which word best describes a feeling of intense dislike?

The word that best describes a feeling of intense dislike is "loathing." This term specifically conveys a strong sense of disgust or hatred toward someone or something, which aligns closely with the idea of an intense dislike. While "aversion" also indicates a strong disinclination or repugnance, it does not always carry the same level of intensity that loathing does.

"Antipathy" refers to a deep-seated feeling of aversion and can imply some level of emotional detachment, making it slightly less intense than loathing. "Disdain," on the other hand, suggests a sense of superiority and contempt rather than focusing solely on intense dislike. Therefore, loathing captures the essence of an intense dislike most accurately among the options given.