(no subject)

[aokugi.livejournal.com]

soporific / sop-uh-rih-fik
adjective, noun
1. causing or tending to cause sleep.
2. pertaining to or characterized by sleep or sleepiness; sleepy; drowsy.
3. something that causes sleep, as a medicine or drug.

Example: Her doctor prescribed a soporific to help her sleep better.

Origin: 1690, from Fr. soporifique (1687), formed in Fr. from L. sopor (gen. soporis) "deep sleep."

http://dictionary.reference.com/browse/soporific