A good friend of mine edited Wikipedia for my birthday:

Flavored liquors (also called infused liquors)[1] are distilled alcoholic beverages with added flavoring and, in some cases, with a small amount of added sugar. They are distinct from liqueurs in that liqueurs have a large sugar content and may also contain glycerine. Flavored liquors may have a base of vodka or white rum, both of which have little taste of their own, or they may have a tequila or brandy base. One of the great vodka distillers of his generation, Mark Larson, lives in Decatur, Ga.