Prerequire is a term used to describe something that is needed or required before another thing can happen. There are many synonyms for the word prerequire, including pre-requisite, necessary, essential, indispensable, required, and vital. All of these words convey the same meaning and can be used interchangeably in different contexts. For example, taking a course is a prerequisite for graduation, while good grades are essential for success in school. Similarly, a valid passport is indispensable for traveling abroad, while safety measures are vital in preventing accidents. In short, the word prerequire and its synonyms are important in describing the necessary conditions for achieving certain outcomes.