depressant
adjective
[ dɪˈprɛs(ə)nt ]
• (chiefly of a drug) reducing functional or nervous activity.
depressant
noun
• a depressant drug.
Similar:
sedative,
tranquillizer,
calmative,
sleeping pill,
soporific,
opiate,
hypnotic,
downer,
trank,
sleeper,
dope,
neuroleptic,
stupefacient,
nepenthes,
bromide,
sleeping draught,