1. the quality or state of being unchangeable or unable to be altered
Usage: formal; often used in philosophical or abstract contexts

Examples

• The immutableness of the laws of physics is a cornerstone of scientific understanding.
• Philosophers have long debated the immutableness of human nature.
• The immutableness of the written contract provided security to both parties.
• Religious texts are often regarded as possessing a kind of immutableness by believers.
• The immutableness of digital records once encrypted makes them valuable for archival purposes.