He sounds like a soporific senator defending the ugly compromises of Washington.
Innocuous, soporific white guys like Rob Portman and T-Paw became the horses to bet on.
“Gently rolling hills” roll not-so-gently under my tires, but the English countryside scenery is soporific.
A travelogue of the drug-testing labs at Pfizer, Eli Lilly, or GlaxoSmithKline would likely be soporific.
The premise is this: turkey is chock-full of a soporific essential amino acid, tryptophan, one of the 22 essential amino acids.
But it is inebriant, and not soporific; and its secondary sedative action on the heart is more powerful than that of Opium.
He had made up his mind that he might have to spend days in this soporific hamlet.
From which it appears evident that the actual words used as a soporific allow considerable latitude of choice.
The soporific, thwarted in its effect for a moment, redoubled its power over him.
To these soporific works of reference he apparently regarded the dramatist's volume as a fitting pendant.
"tending to produce sleep," 1680s, from French soporifique (17c.), formed in French from Latin sopor (genitive soporis) "deep sleep" (see sopor). As a noun from 1722. Earlier as an adjective was soporiferous (1580s as "characterized by excessive sleep," c.1600 as "soporific").
soporific sop·o·rif·ic (sŏp'ə-rĭf'ĭk, sō'pə-)
Inducing or tending to induce sleep.