There are a variety of antonyms for the word "doingest," a term that no longer has common usage in modern English. Some antonyms might include "not doing," "sitting still," "observing," or "pausing." The word "doingest" itself is a form of the verb "to do," and it is an archaic or outdated form that is no longer in common use. As such, finding specific antonyms for this term can be challenging. More generally, we can find antonyms for the broader concept of "doing" by looking at terms like "inaction," "lethargy," or "inactivity," which represent the opposite of taking action or carrying out tasks.