The word "deepsixes" is a colloquial term that means to get rid of something or to discard it. There are several antonyms for this word, which mean the opposite. The opposite of "deepsixes" is to keep, preserve, cherish, retain or save. If someone wants to keep something, they would not "deepsixes" it. For instance, if an individual values a trophy, they will not "deepsix" it, but instead, they will preserve it. In essence, antonyms for "deepsixes" are words that describe actions that involve taking care of or keeping something.