nightmare

(noun)

noun

1. a situation resembling a terrifying dream

Similar word(s): incubus

Definition categories: state, situation

2. a terrifying or deeply upsetting dream

Definition categories: thought, dream, dreaming

Sentences with nightmare as a noun:

- I had a nightmare that I tried to run but could neither move nor breathe.

- Cleaning up after identity theft can be a nightmare of phone calls and letters.