"Anathema, in common usage, is something that or someone who is detested or shunned. In its other main usage, it is a formal excommunication. The latter ...
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meaning, its ecclesiastical sense, is based on New Testament usage. In the Old Testament, anathema was a creature or object set apart for sacrificial offering and thus removed from ordinary use and destined instead for destruction." - (en.wikipedia.org 16.05.2021)