Soporific definition
The way you feel after a sleeping pill is an example of something that would be described as a soporific medication.
A speech that makes you drowsy is an example of something that would be described as a soporific presentation.
Other Word Forms
Noun
Origin of soporific
- From French soporifique, from Latin sopor (“deep sleep"), from Proto-Indo-European *swepōr, from Proto-Indo-European *swep-. Unrelated to stupor (distinct in Proto-Indo-European).
From Wiktionary