01 n. An implacable or malicious foe; one who is diabolically wicked or cruel; an infernal being; -- applied specifically to the devil or a demon.
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An implacable or malicious foe; one who is diabolically wicked or cruel; an infernal being; -- applied specifically to the devil or a demon.“Into this wild abyss the wary fiend Stood on the brink of Hell and looked a while.” — Milton.“O woman! woman! when to ill thy mind Is bent, all hell contains no fouler fiend.” — Pope.