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Definition of immutable

immutable

/ɪˈmjuːtəbəl/
im · mu · ta · ble
Adverb:immutably
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immutable Lexical Profile

immutable Game Scores & Validity

• adjective

1

Unchanging over time or unable to be changed.

Example

"The physicist argued that the fundamental laws of thermodynamics are immutable across the known universe."

2

In computing and object-oriented programming, designating an object or data structure whose state cannot be modified after it is created.

Example

"In Python, strings and tuples are immutable types, meaning any operation that appears to alter them actually creates a new object in memory."

Synonyms
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Antonyms
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• Rhymes for immutable

• Nearby Words

immunocomplex
immunology
immunosuppressed
immutable
imp
impact
impacted

Word Origin & Etymology

Borrowed in the late 14th century from Latin immutabilis ('unchangeable'), formed from the privative prefix in- ('not') and mutabilis ('changeable'), from the verb mutare ('to change').

Cite this Entry

Wordmom. (2026). Definition of Immutable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/immutable
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