| Sour |
| Tart |
| Low-pH |
| Cutting |
| Scathing |
| Vinegary |
| Sharp ___ |
| Not basic |
| Astringent |
| Very harsh |
| Bitter ___ |
| Like lemons |
| Acid-forming |
| Hardly basic |
| Not alkaline |
| Like vinegar |
| Sour tasting |
| With a low pH |
| Sharp-tasting |
| Bitter tasting |
| Far from basic? |
| Sharp, in a way |
| Having a low pH |
| Vinegary-tasting |
| Like apple juice |
| Like sour grapes |
| Like lemon juice |
| Like citrus fruit |
| Like orange juice |
| Opposite of basic |
| Tart to the taste |
| Like citrus fruits |
| Like citrus juices |
| Bad for tooth enamel |
| Like grapefruit juice |
| Like orange juice, say |
| Forming a sour compound |
| Like battery fluid or vinegar |
| Sharp-tasting like lemon juice |
| Like vinegar or grapefruit juice |
| Like milk, but not milk of magnesia |