| sour | |
| 1. adj. Having an acidic, sharp or tangy taste. | |
| Lemons have a sour taste. | |
| 2. adj. Made rancid by fermentation, etc. | |
| sour milk | |
| 3. adj. Tasting or smelling rancid. | |
| sour stink | |
| 4. adj. Peevish or bad-tempered. | |
| He gave me a sour look. | |
| 5. adj. (of soil) Excessively acidic and thus infertile. | |
| sour land | |
| a sour marsh | |
| 6. adj. (of petroleum) Containing excess sulfur. | |
| 7. adj. Unfortunate or unfavorable. | |
| 8. adj. (music) Off-pitch, out of tune. | |
| 9. n. The sensation of a sour taste. | |
| 10. n. A drink made with whiskey, lemon or lime juice and sugar. | |
| 11. n. (by extension) Any cocktail containing lemon or lime juice. | |
| 12. n. A sour or acid substance; whatever produces a painful effect. | |
| 13. v. To make sour. | |
| Too much lemon juice will sour the recipe. | |
| 14. v. (intransitive) To become sour. | |
| 15. v. To spoil or mar; to make disenchanted. | |
| 16. v. (intransitive) To become disenchanted. | |
| We broke up after our relationship soured. | |
| 17. v. To make (soil) cold and unproductive. | |
| 18. v. To macerate (lime) and render it fit for plaster or mortar. | |
