[ nahyt-mair-ish ]
/ ˈnaɪtˌmɛər ɪʃ /


resembling a nightmare, especially in being terrifying, exasperating, or the like: his nightmarish experience in a concentration camp.

Origin of nightmarish

First recorded in 1825–35; nightmare + -ish1

Related forms

night·mar·ish·ly, adverbnight·mar·ish·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nightmarish