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.

Displeased with something one formerly admired or liked; disenchanted.

Not measuring up to the expected or usual ability or quality; bad.

Not having the correct or properly produced pitch.

Of or relating to excessively acid soil that is damaging to crops.