IPA: /ˈɡuːlɪʃli/
KK: /ˈɡuːlɪʃli/
In a way that is strange, morbid, or related to the supernatural, often causing fear or disgust.
The haunted house was decorated ghoulishly, with fake blood and eerie sounds.
Ghoulishly → It is formed from "ghoul" (from Arabic *ghul*, meaning a demon or evil spirit) and "-ishly" (meaning in a manner of). The word "ghoulishly" means in a manner that resembles or is characteristic of a ghoul, often implying something morbid or gruesome.
Imagine behaving in a way that is characteristic of a demon or evil spirit — that's what ghoulishly means.