- tending to induce drowsiness or sleep；sleepy or drowsy
- a drug or other substance that induces drowsiness or sleep.
noun: soporific, plural noun: soporifics
- 1. tending to induce drowsiness or sleep the motion of the train had a somewhat soporific effect
- ▪ sleepy or drowsy some medicine made her soporific
- ▪ tediously boring or monotonous a libel trial is in large parts intensely soporific
- 1. a drug or other substance that induces drowsiness or sleep.