Which of the following words denotes a strong dislike?

The word "abhor" is a powerful term that signifies a strong aversion or deep-seated dislike for something. It conveys a sense of intense disapproval and revulsion, making it an effective way to express feelings of distaste or disgust. This word is often used in contexts where moral or ethical considerations are involved, such as abhorring acts of cruelty or injustice.

In contrast, the other words listed do not convey a strong dislike. "Ache" refers to a physical sensation of pain or discomfort, not an emotional reaction. "Favor" indicates a preference or approval toward someone or something, suggesting a positive feeling rather than a negative one. "Appreciate" involves recognizing value or gratitude toward someone or something, further aligning it with positive sentiments. Thus, "abhor" stands out as the only choice that explicitly indicates a strong dislike.