noun
demon
DEE-muhn/ˈdiːmən/
An evil supernatural being.
A shadowy demon with horns and claws emerges from smoke.

Etymology
Greek daimōn could name a guiding spirit rather than an evil being. Its use for heathen gods and unclean spirits in Jewish and Christian texts established the malignant meaning.
In context
he's a demon whose role is to make human beings deviate from the righteous path and forc them to give themselves up to the vice of money and material possessions
More examples
- In the legend, a priest drives the demon away.
- She struggles with the inner demons that keep her awake.
- He's a demon on the basketball court.
Forms
demon · demons
demonic adjective — Relating to or resembling an evil spirit.