Satanic
Part of speech: adjective
Definition: Related to or showing typical signs of LaVeyan Satanism suggestive of Satan or the devil evil, fiendish, devilish or diabolical
Infernal
Part of speech: adjective
Definition: of, or relating to hell, or the world of the dead; hellishto a great fire or infernostygian, gloomydiabolical or fiendishvery annoying; damned