demonism demonish • demonist · · · Info · Definitions · Synonyms · Characters · · demonism · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a belief in and reverence for devils (especially Satan). Synonyms: diabolism, Satanism. · · Noun Definition 1 Synonyms · · · diabolism · · Synonym 1 satanism · · Synonym 2 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073