soporific (adjective) – tending to induce drowsiness or sleep

(Pronounced sop-uh-rih-fik)

To remember the definition of the word soporific, use the following mnemonic:

He thought soppy films were horrific (soporific). They tend to induce drowsiness. 

Examples of soporific (adjective) in a sentence

The soporific side effects of his medication meant he couldn't drive while taking the pills. 

The teachers soporific voice made it hard to stay awake in his class. 

Documentaries seemed to have a soporific affect on him.