Antonyms are words that have opposite meanings. If the phrase "are crazy over" implies intense liking or enthusiasm for something, then some antonyms could be "uninterested," "apathetic," or "indifferent." These words express a lack of passion or enthusiasm for the object of discussion. Other antonyms that come to mind include "hate," "dislike," "detest," and "abhor." These words suggest outright opposition, an active aversion, or a strong negative sentiment towards the subject. Antonyms can help to express a wider range of ideas and emotions in our communication, making it more nuanced and precise.