The term "comprehensibilities" refers to the degree to which something is understandable or easy to comprehend. Some antonyms for this word would include "incomprehensibility," "obscurity," "opaqueness," and "inscrutability." These words suggest a lack of clarity or transparency, making it difficult or impossible for someone to understand the subject at hand. Other potential antonyms might include "confusing," "ambiguous," or "unclear." When something is not comprehensible, it can be frustrating or even frightening for those who are trying to make sense of it. As such, it is important to strive for clarity and comprehensibility in all forms of communication.