soporific

1. A drug that induces sleep (synset 104268044)
   is a type of:

   • drug - a substance that is used as a medicine or narcotic
   • hypnagogue - an agent that induces drowsiness or sleep
   subtypes:

   • narcoleptic - a soporific drug that produces an uncontrollable desire to sleep
   • sleeping capsule, sleeping draught, sleeping pill, sleeping tablet - a soporific drug in the form of a pill (or tablet or capsule)
   same as: hypnotic

1. Sleep inducing (synset 302316867)
   similar to: depressant - capable of depressing physiological or psychological activity or response by a chemical agent
   same as: hypnagogic, hypnogogic, somniferous, somnific, soporiferous
2. Inducing mental lethargy (synset 301349046)
   "a narcotic speech"
   similar to: uninteresting - arousing no interest or attention or curiosity or excitement
   same as: narcotic, soporiferous

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