The word "more" implies an increase or addition to something, while "alongside" implies being next to something. Antonyms for "more alongside" would include "less distant," "farther apart," or "separate." These words connote a sense of distance or separation rather than proximity or addition. "Less" also provides an alternative antonym, indicating a decrease rather than an increase in something. "Different" or "opposite" could also serve as antonyms, suggesting a contrast rather than a similarity between two things, which doesn't necessarily imply proximity or addition. Thus, various words can be used as antonyms for "more alongside," depending on the context and intended meaning.