nightmare definition, nightmare meaning | English dictionary

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1    a terrifying or deeply distressing dream  
a    an event or condition resembling a terrifying dream  
the nightmare of shipwreck     
b    (as modifier)  
a nightmare drive     
3    a thing that is feared  
4    (formerly) an evil spirit supposed to harass or suffocate sleeping people  
     (C13 (meaning: incubus; C16: bad dream): from night + Old English mare, mære evil spirit, from Germanic; compare Old Norse mara incubus, Polish zmora, French cauchemar nightmare)  
  nightmarish      adj  
  nightmarishly      adv  
  nightmarishness      n  
English Collins Dictionary - English Definition & Thesaurus  


1    bad dream, hallucination, incubus, night terror, succubus  
2    hell on earth, horror, ordeal, torment, trial, tribulation  

English Collins Dictionary - English synonyms & Thesaurus  

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