Try Our Apps


Avoid these words. Seriously.


[ih-myoo-tuh-buh l] /ɪˈmyu tə bəl/
not mutable; unchangeable; changeless.
Origin of immutable
late Middle English
First recorded in 1375-1425; late Middle English word from Latin word immūtābilis. See im-2, mutable
Related forms
immutability, immutableness, noun
immutably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for immutability
Contemporary Examples
Historical Examples
  • As it was yesterday so it was to-day in that gracious shrine of immutability.

    The Rough Road

    William John Locke
  • The immutability of the Law will be treated in detail later.

  • He alone did not obey the law of immutability in the enchanted, sleeping castle.

    War and Peace Leo Tolstoy
  • Its immutability is therefore, indeed, the cause of the universal becoming.

    Creative Evolution Henri Bergson
  • Where are the passages in which Buffon affirms the immutability of species?

    Evolution, Old & New Samuel Butler
  • Nevertheless, this immutability of popular ideas is not quite perfect.

    The American Credo George Jean Nathan
  • The immutability of them, and the majesty, relieved the tenseness of his mood.

    Heart of the Blue Ridge Waldron Baily
  • The insensibility of the sea, the immutability of the spectacle, revolt me.

  • Isn't it the preservation and immutability of existing borders?

    After the Rain Sam Vaknin
British Dictionary definitions for immutability


unchanging through time; unalterable; ageless: immutable laws
Derived Forms
immutability, immutableness, noun
immutably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for immutability

1590s, from Latin immutabilitas, from immutabilis (see immutable).

Nought may endure but Mutability. [Shelley]



early 15c., from Old French immutable and directly from Latin immutabilis "unchangeable," from assimilated form of in- "not, opposite of" (see in- (1)) + mutabilis "changeable," from mutare "to change" (see mutable). Related: Immutably.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Nearby words for immutability

Word Value for immutability

Scrabble Words With Friends