soporific

Synonyms

drowsy, hypnotic, narcotic, opiate, slumberous (or slumbrous), somnolent;

Antonyms

stimulant;

Near Antonyms

arousing, awakening, energizing, invigorating, rousing, stimulating, wakening, waking;

bracing, refreshing, restorative, reviving, stimulative, stimulatory;

Related Words

depressant, relaxant, sedative, tranquilizing (also tranquillizing);

calming, comforting, lulling, pacifying, quieting, relaxing, restful, settling, soothing;

analgesic, anesthetic, anesthetizing, benumbing, deadening, dulling, numbing;

hypnotizing, mesmerizing, stupefying;