Antonyms for the phrase "more side-by-side" could include "less separated," "apart," "disjoined," "disparate," "distant," "unequal," or "unbalanced." These antonyms convey the notion of something that is not close or continuous, but rather separated or disconnected in some way. For example, "less separated" could describe two things that are not as far apart as they once were, whereas "disparate" could refer to two things that are completely different and not related to each other in any way. These antonyms show that there are many different ways to describe the opposite of "more side-by-side," depending on the context and the specific meanings involved.