Try Our Apps


Supposedly vs. Supposably


[ih-myoo-tuh-buh l] /ɪˈmyu tə bəl/
not mutable; unchangeable; changeless.
Origin of immutable
late Middle English
1375-1425; late Middle English < Latin immūtābilis. See im-2, mutable
Related forms
immutability, immutableness, noun
immutably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for immutable
Contemporary Examples
Historical Examples
  • Let abler men explain to us what we mean when we talk about immutable Morality.

  • How could you believe him constant and immutable, after what happened to me?

    The Memoirs of Madame de Montespan, Complete Madame La Marquise De Montespan
  • And I did not know that immutable Truth sometimes has the ring of a curse and makes you cry, and yet is Truth.

    Woman Magdeleine Marx
  • But those who see the absolute and eternal and immutable may be said to know, and not to have opinion only?

    The Republic Plato
  • A little while and all shall be made good, according to the eternal counsels and immutable promise of God.

British Dictionary definitions for immutable


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 immutable

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

Difficulty index for immutable

Some English speakers likely know this word

Word Value for immutable

Scrabble Words With Friends