"Was session" is a phrase that is not widely used in English and therefore has very few synonyms. However, depending on the context, some alternative phrases can be used. For example, if referring to a meeting or gathering of individuals to discuss a specific topic, some synonyms include conference, seminar, workshop, forum, or summit. If the context refers to a therapy or counseling session, synonyms include therapy appointment, counseling session, counseling meeting, psychotherapy, or psychological counseling. If the context refers to a legislative or parliamentary meeting, some synonyms include assembly, congress, council, or parliament. In general, it is best to use more specific language to accurately convey the intended meaning.