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.
As immutable as pi is, so is Pi (π) Day, a celebration that San Francisco’s Exploratorium invented back in 1988 that has become an international sensation. Randy McMullen, The Mercury News, 13 Mar. 2025 The court said that U.S. law does not provide for immutable smart contracts to be classified as property. Thursday, Democrats plan to offer an amendment to GENIUS to close that loophole, the sources said. Brady Dale, Axios, 12 Mar. 2025 Others believe that human sexuality should be expressed within a male-female covenant and that male and female sexuality are immutable qualities determined by chromosomes present at the beginning of life. Krista Kafer, The Denver Post, 12 Mar. 2025 Security & Transparency: Using blockchain for immutable record-keeping and auditability. Chrissa McFarlane, Forbes, 1 Mar. 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 24 Mar. 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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