SOUR

Definition

1. verb go sour or spoil. — synonyms: turn, ferment, work
2. verb make sour or more sour. — synonyms: acidify, acidulate, acetify
3. noun a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar.
4. noun the taste experience when vinegar or lemon juice is taken into the mouth. — synonyms: sourness, tartness
5. noun the property of being acidic. — synonyms: sourness, acidity
6. adjective smelling of fermentation or staleness. — synonyms: rancid
7. adjective having a sharp biting taste.
8. adjective one of the four basic taste sensations.
9. adjective in an unpalatable state. — synonyms: off, turned
10. adjective inaccurate in pitch. — synonyms: false, off-key
11. adjective showing a brooding ill humor. — synonyms: dark, dour, glowering, glum, moody, morose, saturnine, sullen