When looking for synonyms for the phrase "not anybody", there are several options available that convey a similar meaning. One common option is "nobody," which means no person or not any person. Another possibility is "no one," which is defined as not a single person. Alternatives include "none," meaning not any or no part of something, and "nothing," meaning not anything or no thing. Additionally, "neither" can be used to indicate not one or the other of two things or people. By using these synonyms, you can effectively convey the idea of absence or lack of people or things in a given situation.