The words "able" and "ace" both suggest proficiency, expertise, and competence. However, when it comes to their antonyms, things get a little more complicated. The opposite of "able" could be "incapable," "incompetent," or "unskilled," while the antonyms of "ace" might include "novice," "amateur," or "inept." Another way to approach this is to look at the qualities that make someone an "able ace" such as dedication, talent, and focus. In that case, the antonyms could be "uncommitted," "untalented," and "distracted." Regardless of the approach, the antonyms of "able ace" highlight the importance of perseverance, practice, and discipline in achieving excellence.