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Added 10 October 2026

immutable

adjective

Latin root: immūtābilis Wiktionary

adjective Definition from Wiktionary (CC BY-SA). More about immutable at Wordnik → Where our words come from →

Unable to be changed without exception.
The government has enacted an immutable law.
Not able to be altered in the memory after its value is set initially.
Constants are immutable.

noun

Something that cannot be changed.

Origin

From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable.

From Wiktionary, via Kaikki.org (CC BY-SA)

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