sour

Sense 1 noun

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

Sense 2 verb

go sour or spoil

The milk has soured

Sense 3 adjective

smelling of fermentation or staleness

Sense 4 noun

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

Sense 5 verb

make sour or more sour

Sense 6 adjective

having a sharp biting taste

Sense 7 noun

the property of being acidic

Sense 8 adjective

one of the four basic taste sensations; like the taste of vinegar or lemons

Sense 9 adjective

in an unpalatable state

sour milk

Sense 10 adjective

inaccurate in pitch

a false (or sour) note

Sense 11 adjective

showing a brooding ill humor

a dark scowl