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/nælˈtɹɛk.səʊn/ · noun
(pharmacology) A synthetic drug, similar to morphine, which blocks opiate receptors in the nervous system and is used chiefly in the treatment of heroin addiction..
Use naltrexone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Naltrexone means (pharmacology) A synthetic drug, similar to morphine, which blocks opiate receptors in the nervous system and is used chiefly in the treatment of heroin addiction..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use naltrexone where its definition matches the intended context.
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