| Word | Definitions | Synonyms |
|---|---|---|
| sour | (adjective) having a sharp biting taste | - |
| (adjective) showing a brooding ill humor | Synonyms: dark, dour, glowering, glum, moody, morose, saturnine, sullen | |
| (adjective) inaccurate in pitch | Synonyms: false, off-key | |
| (adjective) smelling of fermentation or staleness | Synonyms: rancid | |
| (adjective) in an unpalatable state | Synonyms: off, turned | |
| (adjective) one of the four basic taste sensations; like the taste of vinegar or lemons | - |