Depressant
WordNet

adjective


(1)   Capable of depressing physiological or psychological activity or response by a chemical agent

noun


(2)   A drug that reduces excitability and calms a person
WiktionaryText

Noun



  1. A pharmacological substance which decreases neuronal or physiological activity.
    Alcohol acts first as a stimulant and then as a depressant.
 
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