NIGHTMARE meaning: Disturbing dream causing fear, anxiety

We found 34 dictionaries that define the word Nightmare:

General (26 matching dictionaries)

nightmare: Merriam-Webster.com
nightmare: Oxford Learner's Dictionaries
nightmare: American Heritage Dictionary of the English Language
nightmare: Collins English Dictionary
nightmare: Vocabulary.com
Nightmare, nightmare: Wordnik
nightmare: Cambridge Advanced Learner's Dictionary
nightmare: Wiktionary
nightmare: Webster's New World College Dictionary, 4th Ed.
nightmare: The Wordsmyth English Dictionary-Thesaurus
nightmare: Infoplease Dictionary
nightmare: Dictionary.com
nightmare: Cambridge Essential American English Dictionary
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Nightmare: Online Plain Text English Dictionary
nightmare: Webster's Revised Unabridged, 1913 Edition
nightmare: Rhymezone
nightmare: AllWords.com Multi-Lingual Dictionary
Nightmare: Dictionary of Phrase and Fable (1898)
nightmare: Free Dictionary
nightmare: Mnemonic Dictionary
Nightmare: The Word Detective
nightmare: Dictionary/thesaurus
nightmare: Online Etymology Dictionary

Computing (1 matching dictionary)

nightmare: Encyclopedia

Medicine (4 matching dictionaries)

Dorland's Illustrated Medical Dictionary (No longer online)
online medical dictionary (No longer online)
Sleep Terms (No longer online)
nightmare: Medical dictionary

Miscellaneous (2 matching dictionaries)

Brilliant Dream Dictionary (No longer online)
nightmare: Idioms

Slang (1 matching dictionary)

Nightmare: Urban Dictionary

(Note: See nightmares as well.)

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Definitions from Wiktionary (nightmare)

▸ noun:  A very bad or frightening dream.
▸ noun:  (figuratively) Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure.
▸ noun:  (now rare) A demon or monster, thought to plague people while they slept and cause a feeling of suffocation and terror during sleep.
▸ noun:  (now chiefly historical) A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis.
▸ verb:  (intransitive) To experience a nightmare.
▸ verb:  (transitive) To imagine (someone or something) as in a nightmare.
▸ verb:  (transitive) To trouble (someone or something), as by a nightmare.

Opposite:

dream, bliss, joy, utopia, heaven

Types:

sleep paralysis, incubus, succubus, old hag, more...

Phrases:

nightmare scenario, Nightmare disorder, nightmare file system, A Nightmare on Elm Street, The Nightmare Before Christmas, more...

Adjectives:

worst, horrible, long, terrible, hideous, recurring, real, logistical, administrative, recurrent, whole

Colors:

black, dark red, midnight blue, deep purple, blood red, more...

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