nightmare

US /ˈnaɪtˌmɛr/

UK /ˈnaɪtmeə(r)/

A2

noun

  • Frightening, difficult or displeasing experience
  • Frightening or upsetting dream while sleeping

Examples

I have nightmares about drowning.

the nightmare scenario of mass unemployment The writer evokes a nightmare vision of a future on a polluted planet.