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soporific

/sɒpəˈrɪfɪk/ · so.por.if.ic
noun
  1. Something inducing sleep, especially a drug. The doctor prescribed a soporific to help the patient sleep.
  2. Something boring or dull. The professor's lecture was a soporific that put the entire class to sleep.
adjective
  1. Tending to induce sleep. The soporific effect of the medication helped the patient fall asleep quickly.
  2. Boring, dull. The professor delivered a soporific lecture that failed to engage the students.
Did you know? The word 'soporific' has been used to describe not only sleep-inducing substances but also dull or uninteresting things, highlighting the complex relationship between sleep and attention.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Aug 15, 2026