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Nightmare
01
a very scary, unpleasant, or disturbing dream
Examples
The horror movie I watched last night gave me nightmares.
02
a situation or experience that is extremely unpleasant, difficult, or challenging
Examples
Losing her passport abroad turned into a complete nightmare.
03
a person or thing that is difficult, unpleasant, or causes trouble
Lexical Tree
nightmarish
nightmare
