Definitions

from The Century Dictionary.

  • Like a nightmare.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Terrifying, as if in a nightmare{2}; resembling a nightmare{2}.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Resembling a nightmare.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective extremely alarming

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

nightmare +‎ -ish

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Examples

Comments

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  • "Clearly today was going to be nightmarish." -Twilight, Stephanie Meyer, pg. 54

    October 27, 2010