Definition
Unchangeability denotes the state of being impossible or extremely difficult to alter or modify. It represents a high degree of resistance to change or variation. Think of a law set in stone, nearly impossible to repeal. It implies a fixed or immutable nature. Unchangeability is often associated with fundamental principles or deeply ingrained beliefs. Diamond has unchangeability of structure. It suggests a lack of flexibility or adaptability. This is very similar to immutability.