Definition: Snuffish is a slang word that refers to someone who has taken a substance like a snuff, which is a type of smoke or vapor produced by a human. The term was popularized in the 1960s and early 70s as a way to describe a person who had been drugged or otherwise subjected to an experience that involved being "snuffed" out by someone else. It has since become associated with a sense of shock, fear, or disgust.