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[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.
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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.

  • It is a secret that is known only to God, and His ways are immutable.

    Princess Zara Ross Beeckman
  • 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
  • "Then it has not taken the immutable laws of Nature into consideration," said Wauna.

    Mizora: A Prophecy Mary E. Bradley
  • 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
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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
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