Read the dictionary definition of sour. All definitions for this word.
1. the property of being acidic
2. the taste experience when vinegar or lemon juice is taken into the mouth
3. a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
4. go sour or spoil
1. The milk has soured
2. The wine worked
3. The cream has turned--we have to throw it out
5. make sour or more sour
6. smelling of fermentation or staleness
7. showing a brooding ill humor
1. a dark scowl
2. the proverbially dour New England Puritan
3. a glum, hopeless shrug
4. he sat in moody silence
5. a morose and unsociable manner
6. a saturnine, almost misanthropic young genius
7. a sour temper
8. a sullen crowd
8. inaccurate in pitch
1. a false (or sour) note
2. her singing was off key
9. having a sharp biting taste
10. in an unpalatable state
1. sour milk
11. one of the four basic taste sensations; like the taste of vinegar or lemons
