Sour

a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar

the taste experience when vinegar or lemon juice is taken into the mouth

the property of being acidic

go sour or spoil

make sour or more sour

smelling of fermentation or staleness

having a sharp biting taste

one of the four basic taste sensations

in an unpalatable state

inaccurate in pitch

showing a brooding ill humor