The crossword solution for the term SUFFIX WITH 'ORGAN' is ISM. ISM is a suffix that is used to denote a system of beliefs, principles, or doctrines, especially when related to a particular field or activity. It is often used in combination with the word 'ORGAN' to refer to an organization or group that follows a certain set of beliefs or principles. For example, a 'labor ORGAN-ISM' would refer to a labor organization.