| bitter(adjective, mean, severe, evil, taste) |
| acid(noun, adjective, mean, attack, respect) |
| caustic(adjective, mean, attack, respect, severe) |
| sharp(adjective, mean, attack, respect, severe) |
| tart(noun, adjective, severe, taste, sharp) |
| acrimonious(adjective, mean, severe, sharp, nasty) |
| sarcastic(adjective, mean, evil, sharp, nasty) |
| acrid(adjective, attack, respect, severe, taste) |
| cutting(verb, adjective, mean, attack, respect) |
| harsh(adjective, severe, taste, sharp, rough) |
| sour(adjective, taste, sharp, rough, harsh) |
| astringent(adjective, attack, respect, severe, sharp) |
| biting(adjective, mean, attack, respect, severe) |
| mordant(adjective, mean, attack, respect, bitter) |
| vitriolic(adjective, attack, respect, bitter) |
| acidulous(adjective, taste, sharp, harsh, unpleasant) |
| trenchant(adjective, mean, attack, respect, sharp) |
| virulent |
| venomous |
| acerb(adjective, mean, evil, taste, sharp) |