The soporific effect of the medication made driving dangerous.
Synonyms for soporific
sedating
sleep-inducing
narcotic
Antonyms for soporific
stimulating
awakening
invigorating
Practice soporific on real SAT questions
Vocabulary like soporific appears on the Digital SAT in Words-in-Context questions, where you choose the word that fits a passage's meaning and tone. You can also drill this word with vocabulary flashcards.