somniferous

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/sɒmˈnɪfərəs/US:USA pronunciation: respellingUSA pronunciation: respelling(som nifər əs, səm-)



WordReference Random House Unabridged Dictionary of American English © 2020
som•nif•er•ous  (som nifər əs, səm-),USA pronunciation adj. 
  1. Drugsbringing or inducing sleep, as drugs or influences.
som•nifer•ous•ly, adv. 
  • Latin somnifer inducing sleep (somni-, combining form of somnus sleep + -fer -fer) + -ous
  • 1595–1605

Collins Concise English Dictionary © HarperCollins Publishers::
somniferous /sɒmˈnɪfərəs/, somnific adj
  1. rare tending to induce sleep
Etymology: 17th Century: from Latin somnifer (from somnus sleep + ferre to do) + -ous
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