- inconceivable; unimaginable: the unthinkable size of the universe.
- not to be considered; out of the question: Such a suggestion is unthinkable.
- something that cannot be conceived or imagined, as something too unusual, vague, or disagreeable: Today's unthinkables are tomorrow's realities.
Origin of unthinkable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unthinkable
It is, Zelden said, “unthinkable” that Scalise would harbor these views.No. 3 Republican Admits Talking to White Supremacist Conference
December 30, 2014
You even went out and bought the fabric for your own Oscar dress, which would be unthinkable for an actress to do today.All Eyes on Anjelica Huston: The Legendary Actress on Love, Abuse, and Jack Nicholson
November 10, 2014
To the millions of Russians who listen to Echo both on the radio and online, the idea of life without Echo is unthinkable.The Kremlin Is Killing Echo of Moscow, Russia’s Last Independent Radio Station
November 7, 2014
Defying instructions would have been unthinkable during the tenure of his father or grandfather.Has North Korea’s Kim Jong Un Been Toppled?
Gordon G. Chang
October 6, 2014
But existence without “urban music” is unthinkable for much of the incarcerated population.Prisoners Get Cultural Fix with 8-Tracks and Bootleg Cassettes
August 18, 2014
Out of her presence what I had seen was unthinkable, unbelievable.The Bacillus of Beauty
It must tend to some end, or else our universe is ruled by chance, which is unthinkable.
They are unthinkable and only to be approached by the statistician or the poet.Howards End
E. M. Forster
Worn as he was, it was unthinkable that he should go far to-night.Scaramouche
At best, it was void of honor; at worst, it was unthinkable.The Dominant Strain
Anna Chapin Ray
- not to be contemplated; out of the question
- unimaginable; inconceivable
- unreasonable; improbable
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 unthinkable
Online Etymology Dictionary, © 2010 Douglas Harper