Donald Newlove clearly set out to write a first novel about demoniac society.
From the time.com
At the sight of their heroes and heroines, the crowd would turn demoniac.
From the timesunion.com
In Mailerian terms, this usually means a lack of recognition of the demoniac part of human nature.
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A few weeks later at the Republican convention he finds all the demoniac presences he can handle.
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As rendered by Director Haines, the experience is like being sealed inside a demoniac color television set.
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Not only evil spirits but also diseases, often ascribed to demoniac influences, could not endure the sight of fire.
From the en.wikipedia.org
A Clockwork Orange, based on the Anthony Burgess novel, is a merciless, demoniac satire in the future imperfect.
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An finally all the doors to the demoniac areas.
From the en.wikipedia.org
While Hitler's will to power seemed almost demoniac in its ferocity, that was partly because he encountered such feeble opposition.
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More examples
Someone who acts as if possessed by a demon
Amuck: frenzied as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"
Demoniac was a heavy metal band from New Zealand formed in Wellington in 1993 by singer and bass player Lindsay Dawson, guitarist Sam Totman and Drummer Steve Francis. Three of the members went on to form DragonForce. ...
The Demoniac was a play by early 19th century American playwright John Augustus Stone.
Demonic possession is held by many belief systems to be the spirit possession of an individual by a malevolent preternatural being, commonly known as a demon or devil. Obsessions and possessions of the devil are placed in the rank of apparitions of the evil spirit among men...
(The Demoniacs) The Demoniacs, first published in 1962, is a detective story/historical novel by John Dickson Carr set in the London of 1757. This novel is a mystery of the type known as a whodunnit as well as being a historical novel.