Most offlying is an uncommon phrase, and it has no direct antonym. However, if we break it down, "most" means "more than half," and "offlying" means "distant" or "remote." Hence, we can find antonyms for each component. Antonyms for "most" could be "least" or "fewest," and antonyms for "offlying" could be "nearby," "close to," or "adjacent." Using these antonyms, we can create alternative phrases such as "least distant," "fewest remote," "nearby," or "adjacent." It is essential to consider the context in which the phrase is used to find the most appropriate antonym.