[ih-myoo-tuh-buh l]


not mutable; unchangeable; changeless.

Origin of immutable

First recorded in 1375–1425; late Middle English word from Latin word immūtābilis. See im-2, mutable
Related formsim·mu·ta·bil·i·ty, im·mu·ta·ble·ness, nounim·mu·ta·bly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for immutable

Contemporary Examples of immutable

Historical Examples of immutable

  • The answer of the son came with an immutable finality, the sublime faith of love.

    Within the Law

    Marvin Dana

  • 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

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

  • That is immutable; you may trust your soul to that; but you must be certain first of your quantities.

  • These laws are as immutable as Newton's laws, and come, like his, from beyond our ken.

British Dictionary definitions for immutable



unchanging through time; unalterable; agelessimmutable laws
Derived Formsimmutability or immutableness, nounimmutably, 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

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