The term "co-wed" means to get married together or to jointly exchange vows. However, in the English language, there are antonyms that can be used to indicate opposite meanings. For instance, the antonym of "co-wed" could be "divorce." Divorce refers to legal separation or the end of a marriage union. Another antonym of co-wed could be "single," indicating someone who is not married or does not have a partner. Additionally, the word "breakup" can also serve as an antonym for co-wed, as it indicates the termination of a relationship or partnership.