"Not anyone" is a phrase that refers to the absence of persons or individuals. Other synonyms to use instead of "not anyone" include "nobody," "no one," "none," "zero," and "zilch." These words are commonly used to indicate the absence of something or someone. They are useful when trying to express that there is no one around or nothing to be found. Another option is to use the term "nothing doing," which is a colloquial expression that means there is no way of doing something, or simply "no way." These terms can be helpful in conversations or text messages where brevity and clarity are essential.