immutable

1 of 2

adjective

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

immutability

2 of 2

noun

im·​mutability (¦)i(m) How to pronounce immutability (audio)
ə+
: the quality or state of being immutable

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

Adjective 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
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Adjective
For trans teens and their families, the dispute has involved a matter of immutable identity and equal opportunity. Devin Dwyer, ABC News, 30 June 2026 Crypto markets will not gain institutional trust simply because transactions are recorded on an immutable ledger. Sean Stein Smith, Forbes.com, 30 June 2026 Each player has to be further divided into categories based on immutable characteristics like race. Dan Zaksheske Outkick, FOXNews.com, 22 June 2026 But if the real point is to help people, the government can do that now – without needlessly discriminating on the basis of immutable characteristics. Rafael Perez, Oc Register, 10 June 2026 See All Example Sentences for immutable

Word History

Etymology

Adjective

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

Noun

Latin immutabilitas, from immutabilis immutable + -itas -ity

First Known Use

Adjective

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 5 Jul. 2026.

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

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