Updive is a relatively uncommon verb that refers to the act of diving or plunging upward. Despite being less common, there are still several synonyms for the word. Some possible examples include soar, ascend, surge, jump, vault, and spike. Each of these words has a slightly different connotation, but they all share the basic idea of moving upward quickly and/or forcefully. For instance, soar might suggest a more gentle, graceful ascent, while surge could imply a sudden and powerful burst of energy. Depending on the context in which it is used, any of these synonyms could be an appropriate replacement for the word updive.