"Not to" is a commonly used phrase in English that means "to refrain from doing something". There are several synonyms for "not to" that can be used in different contexts depending on the situation. Some of the commonly used synonyms for "not to" include "avoid", "abstain", "refrain", "withhold", "forbear", "deny", and "decline". These words have similar meanings but can be used in different contexts. For example, "avoid" is used when one wants to stay away from a situation or a person. "Decline" is used when one wants to refuse an offer or an invitation. Using a variety of synonyms for "not to" can add variety and interest to our conversations or writings.