Usually means: Evoking intense fear or horror.
Definitions Related words Phrases Mentions Lyrics History Colors (New!)
We found 19 dictionaries that define the word nightmarish:

General (16 matching dictionaries)
  1. nightmarish: Merriam-Webster
  2. nightmarish: Oxford Learner's Dictionaries
  3. nightmarish: Collins English Dictionary
  4. nightmarish: Vocabulary.com
  5. Nightmarish, nightmarish: Wordnik
  6. nightmarish: Cambridge Advanced Learner's Dictionary
  7. nightmarish: Wiktionary
  8. nightmarish: Infoplease Dictionary
  9. nightmarish: Dictionary.com
  10. nightmarish: Cambridge Essential American English Dictionary
  11. nightmarish: Rhymezone
  12. nightmarish: FreeDictionary.org
  13. nightmarish: Mnemonic Dictionary
  14. nightmarish: TheFreeDictionary.com

Medicine (2 matching dictionaries)
  1. nightmarish: Merriam-Webster Medical Dictionary
  2. nightmarish: Medical dictionary

Slang (1 matching dictionary)
  1. nightmarish: Urban Dictionary

(Note: See nightmare as well.)

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Definitions from Wiktionary (
)
American English Definition British English Definition
▸ adjective:  Resembling a nightmare.

Similar:
hair-raising, bloodcurdling, alarming, nightmarelike, nightmarious, dreamish, nightmary, surreal, hallucinoid, oneiric, more...

Opposite:
idyllic, dreamlike, perfect

Types:
horrifying, terrifying, scary, spooky, creepy, eerie, more...

Phrases:
nightmarish and powerful, more...

Colors:
    black,     blood red,     deep purple,     dark gray,     midnight blue, more...



▸ Words similar to nightmarish

▸ Usage examples for nightmarish

▸ Idioms related to nightmarish

▸ Wikipedia articles (New!)

▸ Popular nouns described by nightmarish

▸ Words that often appear near nightmarish

▸ Rhymes of nightmarish

▸ Invented words related to nightmarish

Similar:
hair-raising, bloodcurdling, alarming, nightmarelike, nightmarious, dreamish, nightmary, surreal, hallucinoid, oneiric, more...

Opposite:
idyllic, dreamlike, perfect

Types:
horrifying, terrifying, scary, spooky, creepy, eerie, more...

Phrases:
nightmarish and powerful, more...

Colors:
    black,     blood red,     deep purple,     dark gray,     midnight blue, more...



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