Immutable may describe something that is incapable of change, but the word itself—like all words—is mutable, both capable of and prone to alteration.

IMMUTABLE definition: not mutable; unchangeable; changeless. See examples of immutable used in a sentence.

In the physical world, we think of rocks and mountains as immutable. No natural law commands it, and there's nothing about it that's immutable or permanent. A mighty sequoia that is immutable …

Definition of immutable adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

immutable meaning, definition, what is immutable: never changing or impossible to change: Learn more.

Dec 28, 2025 · (programming, of a variable) Not able to be altered in the memory after its value is set initially. Constants are immutable.

The comprehensive definition of immutable. Includes pronunciation, synonyms, etymology, and usage examples to help you master this word.

Define immutable. immutable synonyms, immutable pronunciation, immutable translation, English dictionary definition of immutable. adj. Not subject or susceptible to change. im·mu′ta·bil′i·ty , …

Definition of immutable. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

WordReference Random House Learner's Dictionary of American English © 2025 im•mu•ta•ble /ɪˈmyutəbəl/ adj. unchangeable: the immutable laws of physics. im•mu•ta•bil•i•ty /ɪˌmyutəˈbɪlɪti/ …