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[uhn-awl-ter-uh-buh l] /ʌnˈɔl tər ə bəl/
not capable of being altered, changed, or modified.
Also, inalterable.
Origin of unalterable
1610-15; un-1 + alterable
Related forms
unalterableness, unalterability, noun
unalterably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for unalterable
  • Before him, doctrine held that the heavens were perfect and unalterable.
  • In other words, predation is an unalterable fact of life.
  • Instead you have a unalterable world view that denies anything that conflicts with it.
  • Accepting her lot as unalterable, she makes the best of it even when her husband loses his job.
  • Though it is often said that only two things in life are certain, maybe only one is truly unalterable: taxes.
  • He seems to have lacked an inner core, an absolute and unalterable sense of his own character.
  • Carefree spending, huge tax cuts, and-above all-unalterable demographic facts have put us all in a box.
  • There is one unalterable bit of good news that emerged at trial, however, and it shouldn't be overlooked.
  • It was an unalterable fact of how light moves through water, relative to our own movement abilities and size.
  • Remember: your egg cells are formed prior to birth and, mutations aside, contain essentially unalterable genetic information.
British Dictionary definitions for unalterable


/ʌnˈɔːltərəbəl; -ˈɔːltrəbəl/
(of a condition, truth, etc) unable to be changed or altered
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 unalterable

1610s, from un- (1) + alterable. Related: Unalterably.

Online Etymology Dictionary, © 2010 Douglas Harper
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