Exposit, which means to explain or clarify a topic, can have several antonyms depending on the context. Some common antonyms for exposit are obscure, confuse, obfuscate, and distort. If you want to intentionally hide or conceal information, then you could use the word obscure instead of exposit. Similarly, if you want to create confusion or misunderstanding, the word confuse would be the best antonym. Obfuscate means to make a subject more complex or hard to understand, while distort means to change the true meaning of something. Therefore, the best antonym for exposit depends on the message you want to convey and the effect you want to create on your audience.