soporific
soporific [ sop-uh’-RIF-ik, soh-puh’- ] [ noun, adjective ] MEANING : 1. (adj.) causing or tending to cause sleep 2. (adj.) of or pertaining to sleep or drowsiness 3. (n.) something that causes sleep USAGE EXAMPLE 1 : For a generation brought up on a diet of T20 cricket, a test match could prove to be positively soporific. USAGE EXAMPLE 2 : His lecture is titled "Meaning in American Politics," but it might have been better titled "Dreaming in American Politics," for it proves a powerful soporific.