Meaning of nightmarish

night•mar•ish

Pronunciation: (nīt'mâr"ish), [key]
— adj.
  1. resembling a nightmare, esp. in being terrifying, exasperating, or the like: his nightmarish experience in a concentration camp.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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