Related to Satan or the devil; extremely evil or wicked.
From Hebrew 'Satan' meaning adversary or accuser, via Greek 'satanas.' The word entered English through religious texts and evolved to mean devilish or profoundly evil.
The concept of Satan as a powerful, tempting figure is actually quite different across religions—in Christianity, Judaism, and Islam, Satan has different roles and meanings, but English speakers often use 'satanic' without realizing the religious complexity behind it.
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