| pungent(adjective, strong, sharp, harsh, powerful) |
| rotten(adjective, bad, hard, evil, rough) |
| turn(verb, action, spoil, decay, sour) |
| acerb(adjective, taste, sharp, harsh, bitter) |
| acidify(verb, action, dull, work, turn) |
| acidulous(adjective, taste, sharp, harsh, bitter) |
| bad(adjective, nasty, offensive, unpleasant, rank) |
| distasteful(adjective, bad, nasty, offensive, unpleasant) |
| dry(adjective, hard, taste, sharp, flat) |
| keen(adjective, strong, sharp, property, powerful) |
| saturnine(adjective, happy, sadness, gloom, unclear) |
| snappish(adjective, tough, difficult, harsh, feelings) |
| soured(adjective, rank, disagreeable, bitter, stale) |
| stale(adjective, hard, rank, corrupt, foul) |
| stinging(adjective, strong, severe, sharp, nasty) |
| tangy(adjective, strong, taste, sharp, harsh) |
| unhappy(adjective, bad, nasty, offensive, unpleasant) |
| cranky(adjective, difficult, feelings, gloomy, depressed) |
| grim(adjective, appearance, hard, tough, severe) |
| gruff(adjective, severe, low, sad, cross) |