O que é sour? O que é sour? Having a taste characteristic of that produced by acids; sharp, tart, or tangy.Made acid or rancid by fermentation.Having the characteristics of fermentation or rancidity; tasting or smelling of decay. Bad-tempered and morose; peevish: a sour temper. Displeased with something one formerly admired or liked; disenchanted: sour on ballet. Not measuring up to the expected or usual ability or quality; bad.Not having the correct or properly produced pitch: a sour note. Of or relating to excessively acid soil that is damaging to crops.Containing excessive sulfur compounds. Used of gasoline.The sensation of sour taste, one of the four primary tastes.Something sour.A mixed drink made especially with whiskey, lemon or lime juice, sugar, and sometimes soda water.To make or become sour.To make or become disagreeable, disillusioned, or disenchanted.