What does "neat" refer to when ordering a drink?

When someone orders a drink "neat," they are requesting a spirit served straight from the bottle without any ice, water, or mixers. This method of serving allows the individual to experience the full flavor profile of the spirit at room temperature. It's a popular way to enjoy high-quality spirits, as it highlights the nuances and characteristics of the liquor, such as its aroma, taste, and finish.

Ordering a spirit neat means that it will be poured directly into the glass, enabling the drinker to savor it fully and appreciate its quality. The other options refer to various ways of serving drinks that involve chilling or diluting the spirit, which is not in line with the definition of "neat."