tending to calm or soothe.

allaying irritability or excitement; assuaging pain; lowering functional activity.

a sedative drug or agent.

adjective

agitating , excitative , upsetting

noun

antidepressant

adjective

allaying , anodyne , calmative , calming , lenitive , relaxing , sleep-inducing , soporific , tranquillizing , hypnotic , narcotic , opiate , slumberous , somnifacient , somniferous , somnific , somnolent

noun

analgesic , anodyne , barbiturate , calmant , calmative , depressant , dope * , downer , drug , hypnotic , knockout pill , medication , narcotic , nerve medicine , opiate , pacifier , pain-killer , pain pill , quietive , sleeping pill , tranquillizer , somnifacient , ansthetic , lenitive , palliative , relaxing , soothing , tranquilizer