soporific
[adjective]
Synonyms:
- sleep-inducing, sedative, somnolent, tranquillizing
[noun]
Synonyms:
- sedative, narcotic, opiate, tranquillizer

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Contrasted words: arousing, waking, invigorating, stimulating
Related Words: calming, quietening, sedative, tranquilizing, anesthetic, deadening, numbing

[TahlilGaran] English Synonym Dictionary ▲

sop‧o‧rif‧ic /ˌsɒpəˈrɪfɪk◂ $ ˌsɑː-/ adjective formal
[Date: 1600-1700; Language: French; Origin: soporifique, from Latin sopor 'deep sleep']
making you feel ready to sleep:
His voice had an almost soporific effect.

[TahlilGaran] Dictionary of Contemporary English ▲