stupefacient

Adj

Inducing stupor or drowsiness (with a drug such as a narcotic or an anaesthetic).

Noun

Any drug that induces stupor or drowsiness.

Scrabble Score: 19

stupefacient: not valid in Scrabble (US) TWL Dictionary
stupefacient: not valid in Scrabble (MW) Merriam-Webster Dictionary
stupefacient: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 23

stupefacient: valid Words With Friends Word