The adjective phrase "gotten top" refers to achieving the highest level or ranking in a particular task or competition. Antonyms for this phrase include "bottom," "last," "worst," and "unsuccessful." These words indicate a lack of achievement, a failure to succeed, or a low ranking. Of course, the opposite of "gotten top" would be to "lose" or "fall back" in rank, but antonyms that denote failure can provide a more extreme contrast. It's important to remember that success and failure are relative concepts, and what may be considered a failure in one context could be a success in another. So, when using antonyms for "gotten top," it's crucial to consider the context and intended meaning carefully.