— soporifically , adv.
/sop'euh rif"ik, soh'peuh-/ , adj.
1. causing or tending to cause sleep.
2. pertaining to or characterized by sleep or sleepiness; sleepy; drowsy.
n.
3. something that causes sleep, as a medicine or drug.
[ 1655-65; sopor SOPOR + -I- + -FIC; cf. F soporifique ]