incubus
🇺🇸
/ˈɪŋkjʊbəs/
🇬🇧
/ˈɪŋkjʊbəs/
A big worry or problem that keeps you awake at night.
The thought of the upcoming exam became an incubus that haunted his sleep.
An evil spirit that was believed to lie on top of women during the night and cause bad dreams.
In old stories, an incubus would visit sleeping women, causing them to have terrifying dreams.