Diabolism

Noun

 * 1) Worship of the devil; Satanism

Adjectives
everlasting; widespread; apparent; marked; noticeable; flagrant.

Thesaurus
Black Mass, Satanism, black magic, chthonian worship, demonism, demonography, demonolatry, demonology, demonomancy, demonomy, demonry, devil lore, devil worship, devilry, diablerie, diabology, diabolology, sorcery, the black art