junkie

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junkie in WordNet English dictionary

noun

someone who is so ardently devoted to something that it resembles an addiction
"a golf addict"; "a car nut"; "a bodybuilding freak"; "a news junkie"
addict nut freak junkie junky
a narcotics addict
drug addict junkie junky

WordNet Lexical Database v3.0, © 2006 Princeton University

junkie in English Wiktionary

(noun) (slang/pejorative) A narcotics addict, especially referring to heroin users.
(noun) (context/by extension) An enthusiast of something.

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