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nightmarish

[nahyt-mair-ish] /ˈnaɪtˌmɛər ɪʃ/
adjective
1.
resembling a nightmare, especially in being terrifying, exasperating, or the like:
his nightmarish experience in a concentration camp.
Origin of nightmarish
1825-1835
1825-35; nightmare + -ish1
Related forms
nightmarishly, adverb
nightmarishness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for nightmarish
adj.

1834, from nightmare + -ish. Related: Nightmarishly; nightmarishness.

Online Etymology Dictionary, © 2010 Douglas Harper
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20
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