immutable

adjective

im·​mu·​ta·​ble (ˌ)i(m)-ˈmyü-tə-bəl How to pronounce immutable (audio)
: not capable of or susceptible to change
immutableness noun
immutably adverb

Did you know?

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. To put a finer point on it, if language were fixed, we wouldn’t have immutable itself, which required a variety of mutations of the Latin verb mutare (“to change”) to reach our tongues (or pens, keyboards, or touchscreens—oh the many permutations of communication!). Other English words that can be traced back to mutare include mutate, transmute, and commute. Which reminds us—the mutability of language makes great food for thought during one’s commute.

Examples of immutable in a Sentence

the immutable laws of nature one of the immutable laws of television is that low ratings inevitably lead to cancellation
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Lucas, a critic of diversity and inclusion programs and proponent of the idea that there are only two immutable sexes, repeatedly declared that the commission is not independent and vowed to enthusiastically follow Trump's executive orders. Arkansas Online, 19 June 2025 Treating configs as immutable through CI/CD pipelines ensures all changes are tracked and reversible. - Anuj Tyagi 17. Expert Panel®, Forbes.com, 18 June 2025 What remains immutable is the physics of computation itself: the energy required to power these systems. Aya Saed, Time, 17 June 2025 More to Explore This represents the securitization of gender: identity is linked with security because the government believes that knowing who people are helps assess risk, and gender is taken as an immutable marker of identity. Laura Clawson, JSTOR Daily, 7 June 2025 See All Example Sentences for immutable

Word History

Etymology

Middle English, from Latin immutabilis, from in- + mutabilis mutable

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of immutable was in the 15th century

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Cite this Entry

“Immutable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immutable. Accessed 3 Jul. 2025.

Kids Definition

immutable

adjective
im·​mu·​ta·​ble (ˈ)im-ˈ(m)yüt-ə-bəl How to pronounce immutable (audio)
: impossible to change
immutably adverb

More from Merriam-Webster on immutable

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