The first pages of most of these old papers are as soporific as a bed of poppies.
He had made up his mind that he might have to spend days in this soporific hamlet.
The soporific, thwarted in its effect for a moment, redoubled its power over him.
I shall administer a soporific to these men, and then shall extinguish the light.
The restlessness of the sea acts as a soporific ...