English

hypnosedative

From hypno- + sedative.

Proto-Indo-European *supnós ‘sleep’

Proto-Hellenic *húpnos

Ancient Greek ὕπνος ‘sleep’

Proto-Indo-European *sed- ‘to sit’

…

Latin sēdō ‘to allay, settle, still, calm, assuage or…’

Medieval Latin sēdātīvus ‘calming, allaying’

Anglo-Norman sedatif

Middle English sedatif

Today it means

noun A material that is both hypnotic and sedative

Language periods are conventional ranges, not dates for this word.

Etymograph / hypnosedative