Intransmutability is a word that means the inability to change or transform. It can be used to describe a variety of things, from a person's personality to the unchanging nature of the physical world. Synonyms for intransmutability include immutability, unchangeability, permanence, and constancy. These words all convey the idea that something is fixed and stable, resistant to alteration or modification. Other words that can be used to describe a lack of change or variability include inflexibility, steadfastness, and rigidity. Whether used in a scientific or philosophical context, the concept of intransmutability is an important one that helps us understand and appreciate the unchanging nature of the world around us.