Antonyms for the phrase "hath the hots for" can range from the negative to the neutral. Some antonyms might include "indifference," "disgust," "apathy," "disinterest," or "coldness." These are all ways of describing a lack of attraction, passion, or desire. Alternatively, you might use antonyms that suggest a more casual or platonic relationship, such as "friendship," "acquaintance," or "colleague." In any case, finding the right antonym will depend on the context in which you are using it, as well as the specific shades of meaning that you are trying to convey.