From Longman Dictionary of Contemporary Englishimmutableim‧mu‧ta‧ble /ɪˈmjuːtəbəl/ adjective formalCHANGE FROM ONE THING TO ANOTHERnever changing or impossible to changeThis decision should not be seen as immutable. —immutably adverb —immutability /ɪˌmjuːtəˈbɪləti/ noun [uncountable]Examples from the Corpusimmutable• In other words the rules of precedence and other aspects of diplomaticceremonial were not immutable.• Maybe this once, the world will display itself as immutable.• Conservatives dug in and insisted that dogmas were immutable and hierarchiesindispensable.• That rule was immutable, and woebetide anyone who disregarded it.• I do not believe that this perceptual process is either universal or immutable, but it is ubiquitous and extremely potent.• an immutable fact• There was no immutabletendency for it to settle at the particular level where all willing workers had a chance for employment.• The principles of credit rating are immutable, they insist; their credit opinions are never swayed by the judgments of others.