Definition of "nefandous" [nefandous]

• Unspeakable, appalling. (adjective)

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• "It just got better and better as each story added new dots to connect and a vast world of eldritch, foetid, blasphemous, nefandous, sepulchral imagination seemed to be slowly revealing itself."
• "He had been brought very close to that immane and nefandous"
• "For my part, I consider Witchcraft the most nefandous high treason against the Majesty on High!"