(obsolete) An enemy; a foe.
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A devil or demon; a malignant or diabolical being; an evil spirit.
We waited for our fiend to arrive.
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A very evil person.
He proffered a pact to Satan, calling upon the Fiend and working himself into a frenzy - but his infernal majesty failed to respond.
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The vocabulary of software engineers, AI researchers, and anyone living in a terminal or on GitHub — from LLM to MCP, CORS to vibe coding, agentic to enshittification.
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