nightmare Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “nightmare” in the English Dictionary

"nightmare" in British English

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nightmarenoun [C]

uk   /ˈnaɪt.meər/  us   /ˈnaɪt.mer/
B1 a very upsetting or frightening dream: a terrifying nightmare I shouldn't have watched that movie - it'll give me nightmares.
B1 an extremely unpleasant event or experience or possible event or experience: The whole journey was a nightmare - we lost our luggage and both flights were delayed. Being trapped underwater is my worst nightmare.

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nightmarish
adjective uk   /ˈnaɪt.meə.rɪʃ/  us   /ˈnaɪt.mer.ɪʃ/
a nightmarish traffic jam
nightmarishly
adverb uk   /ˈnaɪt.meə.rɪʃ.li/  us   /ˈnaɪt.mer.ɪʃ.li/
(Definition of nightmare from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"nightmare" in American English

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nightmarenoun [C]

 us   /ˈnɑɪtˌmeər/
nightmarish
adjective  us   /ˈnɑɪtˌmer·ɪʃ, -ˌmær-/
a nightmarish traffic jam
(Definition of nightmare from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“nightmare” in British English

“nightmare” in American English

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