The term "co-habit" typically refers to the act of living together in a romantic or intimate relationship. When it comes to antonyms, there are a few different possibilities depending on the context. For example, the opposite of co-habit in a romantic sense could be "separate" or "divorce." In a more general sense, the antonym could be "live alone" or "live independently." Other possible antonyms for co-habit could include "avoid interaction" or "maintain distance." Ultimately, the best antonym will depend on the specific meaning and usage of the term in question.