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Soporiferous has 6 synonyms. The top synonyms for soporiferous are narcotic, somnific, soporific, depressant, somniferous, uninteresting. Browse the full list below.
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| Random | DefinitionA common synonym for soporiferous is narcotic. Other synonyms include somnific, soporific, depressant, somniferous.
Soporiferous has 6 synonyms listed on Thesaurasize.
(adj): (archaic) soporific, sleep-inducing
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