satanism(n = noun.cognition) demonism, diabolism - a belief in and reverence for devils (especially Satan);
is a kind of black art, black magic, necromancy, sorcery
Derived form noun satanist1
The evil and malicious disposition of Satan; a diabolical spirit. [1913 Webster]
satanism, n.
1 the worship of Satan, with a travesty of Christian forms.
2 the pursuit of evil for its own sake.
3 deliberate wickedness.
Derivative:
Satanist n. Satanize v.tr. (also -ise).
N satan, the Devil, Lucifer, Mephistopheles, Ahriman, Belial, Samael, Zamiel, Beelzebub, the Prince of the Devils, the tempter, the evil one, the evil spirit, the Adversary, the archenemy, the author of evil, the wicked one, the old Serpent, the Prince of darkness, the Prince of this world, the Prince of the power of the air, the foul fiend, the arch fiend, the devil incarnate, the common enemy, the angel of the bottomless pit, Abaddon, Apollyon, fallen angels, unclean spirits, devils, the rulers, the powers of darkness, inhabitants of Pandemonium, demon, diabolism, devilism, devilship, diabolology, satanism, devil worship, manicheism, the cloven foot, satanic, diabolic, devilish, infernal, hellborn, Mythological and other fabulous Deities and Powers.