unmutative
/ʌnˈmjuːtɪtɪv/Definitions
1. adjective
Refusing to be changed or convinced; obstinately unyielding to reason or persuasion.
“The politician was accused of being unmutative and unwilling to compromise on the issue.”
2. adjective
Lacking mutability or adaptability; resistant to change or influence.
“The company’s unmutative approach to innovation stifled creativity and progress.”