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Từ điển WordNet v3.1 - WordNet Dictionary
depressant


I - noun
a drug that reduces excitability and calms a person
Syn:
sedative, sedative drug, downer
Derivationally related forms:
down (for: downer), depress, sedative (for: sedative)
Hypernyms:
medicine, medication, medicament, medicinal drug, drug of abuse, street drug
Hyponyms:
chloral hydrate, glutethimide, Doriden, sedative-hypnotic, sedative-hypnotic drug

II - adjective
capable of depressing physiological or psychological activity or response by a chemical agent
Ant:
stimulative
Similar to:
ataractic, ataraxic, sedative, tranquilizing, tranquillizing,
tranquilising, tranquillising, narcotic, narcotizing, narcotising, relaxant,
soporific, soporiferous, somniferous, somnific, hypnogogic, hypnagogic
Derivationally related forms:
depress

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