- not capable of being altered, changed, or modified.
Origin of unalterable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unalterable
Unalterable” is code for “we have no intention of changing the system, period.Jewish Responses to the Supreme Court’s Same-Sex Marriage Rulings
June 27, 2013
It crushed them with the weight of unending vastness and unalterable decree.White Fang
But he continued to shake his head with an air of unalterable resolution.L'Assommoir
It made it easier to talk of the future she had arranged, which now was an unalterable thing.Chance
He knew the plans of God, and had formed an unalterable opinion about all his neighbors.'Charge It'
The spiritual healer rose, his face set with an unalterable purpose.Possessed
- (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
Word Origin and History for unalterable
Online Etymology Dictionary, © 2010 Douglas Harper