Need criterion refers to the standard or condition that must be fulfilled or met in order to satisfy a particular requirement. Synonyms for this term include necessity, prerequisite, requirement, precondition, essential element, and vital condition. These words convey the idea that something is necessary or mandatory for a desired outcome. A requirement or criterion can be specific or general, and may be based on a number of factors such as qualifications, capabilities, skills, or resources. By understanding the various synonyms for need criterion, individuals can better focus on meeting the requirements to achieve their goals and objectives.