The phrase "doeth a number" typically means to perform an action that has a negative impact on someone or something. Antonyms for this phrase would include actions that have positive effects, such as offering help, being kind, or showing empathy. Some other antonyms for "doeth a number" might include "heals," "mends," "assists," "comforts," "reverses," or "ameliorates." By using these antonyms, we can promote positive actions and behaviors that make a difference in the lives of others, rather than causing harm or discomfort.