The professor had a soporific voice and I fell asleep. Here it is used as an adjective, meaning the soporific voice made me sleepy.
Assuming that you want a sentence using the word 'soporific' (definition: causing or tending to cause sleep), an example would be: 'The drug she was taking had a soporific effect'
A decongestant and a soporific are combined in cold medicine used at night.
The heat from the log-fire was rather soporific, and my eyes began to feel heavy.
There is no better soporific and sedative than skepticism.-Friedrich Wilhelm NietzscheBecause he had watched so many movies the night before, Joey was soporific the next day during school.
Both soporific and liquid ammonium can induce drowsiness or sleepiness. Soporific refers to a substance that causes sleep, while liquid ammonium, specifically ammonium hydroxide, can be harmful if inhaled and may cause drowsiness, among other health effects.
The following words are examples of "dull":boringTediousSluggishLifelessTiresomeDozyTiredDrowsyPassiveThere are a lot of words that you could use instead. See the link. (These are all adjectives describing a state of consciousness or physicality)A word meaning to make sleepy/induce sleep is soporific.
quintessential,soporific,collateral
sop·o·rif·icsop·o·rif·ic [sòppə ríffik, spə ríffik]adj1.making somebody sleepy: causing sleep or drowsiness2.feeling sleepy: experiencing sleepiness or drowsiness3.tedious: dull and boringThe book he was reading acted as a soporific and soon he was fast asleep.
Causing sleep; tending to cause sleep; soporiferous; as, the soporific virtues of opium., A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.
anesthetic, anodyne, calmative, lenitive, mesmeric, mesmerizing, narcotic, opiate, sleepy, somniferous, somnolent, soothing, soporific, soporose, trance-inducing
Chloroform or Ether. ========================== Soporific Anesthetic
painkiller, narcotic, sedative, opiate, anodyne, analgesic, soporific