Immiscibility is a term used to describe two substances that cannot be mixed together, as they do not have the ability to dissolve into each other. Synonyms for immiscibility include insolubility, non-mixable, non-solubility, and unmixability. These terms refer to the same concept, where two or more substances are unable to mix evenly and form a homogenous solution. Immiscibility is commonly used in chemistry and physics, where it is important to identify and understand the behavior of different substances. By having a variety of synonyms for immiscibility, scientists and researchers can better convey their findings and communicate their work to others in their field.