Indissolvableness refers to a state of being unable to be dissolved or broken apart. Some synonyms for this word include permanence, immutability, inalterability, and durability. These words all connote a sense of steadfastness, or unchangingness. Another related term is unbreakability, which suggests a strength and resilience that cannot be overcome. These synonyms can describe both tangible and intangible things; for example, a physical object like a diamond might be described as having indissolvableness due to its durability, while a person's commitment to a cause or belief might be described as having indissolvableness due to their unwavering dedication.