adjective

demoniac

dih-MOH-nee-ak/dɪˈmoʊniˌæk/

Like or relating to an evil spirit.

The mask has demoniac horns and glaring eyes.

A horned mask has grotesque features and glowing eyes.
Etymology

Possession by a demon broadened into anything like or relating to evil spirits.

More examples

  • The story describes a demoniac figure at the gate.
  • A demoniac face was carved into the prop.

Forms

demoniac

Similar words

demonic
Is a common adjective for relating to demons.
diabolical
Can suggest extreme wickedness without a literal spirit.