nightmare
US /ˈnaɪtˌmɛr/
・UK /ˈnaɪtmeə(r)/
A2
noun
- Frightening, difficult or displeasing experience
- Frightening or upsetting dream while sleeping
- A very frightening or unpleasant dream.
- A very unpleasant or frightening experience or situation.
- A situation or experience that is extremely unpleasant or difficult to deal with.
- A very unpleasant or frightening experience or situation.