==Terms==
The word ''Satan'' derives from the Hebrew "ha-satan", meaning the "accuser", "tempter", "persecutor", "calumniator", or "adversary". He "was a liar and a murderer from the beginning" (John 8:44) Synonyms include '''Lucifer,"' '''demon,''' '''Mephistopholes,''' '''Mephisto,''' ''' Beelzebub,''' the '''Evil One,''' '''the Tempter,''', and '''The Prince of Darkness.''' Only "Devildevil" is used as an epithet for a profoundly evil person.
The adjectives include "devilish," "demonic", and "diabolic". Those who worship Satan are called [[satanism | Satanists]], Satan-worshippers, or demonists.