adjective

demonic

dee-MAH-nik/diˈmɑːnɪk/

Relating to demons or suggesting their evil or frightening power.

The creature's horns and claws give it a demonic appearance.

A snarling horned demon crouches forward, baring pointed teeth and reaching with clawed hands; leathery wings and a barbed tail make its demonic nature unmistakable.
Etymology

Daimōn could name a guiding spirit rather than an evil being. Its use for pagan gods and unclean spirits in religious texts explains the sinister meaning behind demonic.

In context

1221 Manhwa Recap259:15
more terrifying than mutation was abyssal demonization, common among abyssal demons or monsters eroded by demonic energy.
My Skill Was Rated ZERO Stars. So I Cast It 100,000 Times.—Weakest Mage → God of Fire.

More examples

  • A demonic figure haunted the story.
  • The actor produced a demonic laugh.
  • Their folklore described a demonic presence in the cave.

Forms

demonic

Similar words

devilish
Can sound mischievous rather than seriously evil or terrifying.
diabolical
Diabolical can describe extreme wickedness without literal demons.