Antonyms for the phrase "doeth one thing" could include phrases such as "does many things," "does nothing," or "does the opposite." In context, "doeth one thing" suggests a singular focus or action, so its opposing phrases may imply a broader, more varied range of activities or a complete lack of activity. Antonyms for this phrase may depend on the specific context in which it is used, but they generally suggest a divergence from a particular behavior or set of actions. By exploring antonyms for different phrases, we can expand our understanding of language and its nuances.