soporiferous
/ˌsoʊpəˈrɪfərəs/
adjective
- Causing or inducing sleep; soporific.
- The soporiferous drone of the airplane engine helped her fall asleep quickly.
- The professor's soporiferous lecture made half the class nod off.
- Chamomile tea is known for its soporiferous effects before bedtime.
Antonyms