de·pres·sant 
/dɪˈprɛsn̩t/ noun
plural de·pres·sants /dɪˈprɛsn̩t/ noun [count] : a chemical substance (such as a drug) that makes a body's systems less active
▪ alcohol and other depressants — see also antidepressant
▪ alcohol and other depressants — see also antidepressant
— depressant adjective
▪ the depressant effects of alcohol
▪ the depressant effects of alcohol
