A person who creates cocktails; a bartender.(noun)
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Use "mixologist" in a sentence
"We also talk about the history of the Mojito, Albert's bootlegging grandparents, and discuss the controversy over the terms mixologist and bar chef."
"(disclosure: those folks are me, I work there) got together with some of the city's best mixologists (disclosure: I feel a little unsure of the word mixologist) to create Poetry Happy Hour."
"What makes me a mixologist is my understanding and proficiency in the art and history of the cocktail."