This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Inducing or tending to induce sleep.

adj. Drowsy.

n. A drug or other substance that induces sleep; a hypnotic.

n. Something inducing sleep, especially a drug.

n. Something boring or dull.

adj. Tending to induce sleep.

adj. boring, dull

adj. Causing sleep; tending to cause sleep; soporiferous.

n. A medicine, drug, plant, or other agent that has the quality of inducing sleep; a narcotic.

Tending to produce sleep.

n. Anything which causes sleep, as certain medicines.

adj. inducing mental lethargy

n. a drug that induces sleep

adj. sleep inducing

"There is a misunderstanding about the meaning of the word soporific and when Thompson explains it to McDonald they both enjoy a laugh, at themselves mostly, they let go a little, and it is one of the most human and intimate moments in the film up until that point."

uninteresting    depressant   

stimulating   

narcotic   

narcotic    somniferous    opiate    anodyne    soporiferous   

soporiferous    hallucinogenic    deleterious    hypnotic    narcotic