- resembling a nightmare, especially in being terrifying, exasperating, or the like: his nightmarish experience in a concentration camp.
Origin of nightmarish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for nightmarish
Obama officials have to do a far better job of helping all Syrians see that this nightmarish future could surpass the Assad past.Face the Assad Reality In Syria
Frank G. Wisner, Leslie H. Gelb
January 26, 2014
Rather than use metaphors that point toward nightmare, we would do better to turn our gaze to nightmarish reality itself.The Army Life, Mundane and Hideously Violent, by Turns
Brian Van Reet
August 29, 2013
Most Republican senators don't share this nightmarish vision of their country, thank goodness.
But they do answer to an activist base that shares a nightmarish vision of President Obama.
Maybe something of the violence and nightmarish quality of the early short stories had to do with that.All Novels Are Spy Novels: Ian McEwan Talks ‘Sweet Tooth’ and His Life
November 15, 2012
The words one knows so well have a nightmarish meaning in this country.Nostromo: A Tale of the Seaboard
The situation was fantastic, nightmarish, unbelievable and undeniable.
The tale had clutched him in a nightmarish way that shook his nerves.Janet of the Dunes
Harriet T. Comstock
So, as she lay there, her thoughts were chaotic, nightmarish.Find the Woman
Arthur Somers Roche
Mr. Chizzy felt as though he were acting in some ghastly, nightmarish dream.Short Sixes
H. C. Bunner
Word Origin and History for nightmarish
Online Etymology Dictionary, © 2010 Douglas Harper