Insomniac
Pronunciation: /ˌɪnˈsɑːmniːˌæk/
Insomniac (noun)
- A person who often cannot sleep or stays awake for a long time at night.
- Someone with a continuing problem of not being able to fall asleep or stay asleep.
Examples
- An insomniac often stays awake long after midnight.
- The insomniac feels tired but can’t fall asleep.