The phrase "making perfectly clear" implies a sense of clarity or transparency. However, antonyms for this phrase suggest a lack of clarity or understanding. Some possible antonyms include "confusing," "obscuring," "muddying the waters," "befuddling," or "complicating." If something is unclear or difficult to comprehend, it may hinder communication or make it harder to achieve a shared understanding. Therefore, it's important to avoid using language that could create confusion or miscommunication, and strive to use clear, concise, and straightforward language that makes ideas accessible and easy to understand for everyone involved.