| sharp(adjective, attack, hard, respect, severe) |
| acerbic(adjective, attack, respect, severe, sharp) |
| harsh(adjective, strong, hard, tough, severe) |
| severe(adjective, strong, hard, tough, severe) |
| caustic(adjective, attack, respect, severe, keen) |
| acrid(adjective, attack, hard, respect, severe) |
| austere(adjective, strong, hard, tough, severe) |
| bitter(adjective, strong, hard, tough, severe) |
| stern(adjective, severe, harsh, cruel, serious) |
| tart(noun, adjective, severe, sharp, harsh) |
| acid(noun, adjective, attack, respect, severe) |
| acrimonious(adjective, severe, nasty, speech) |
| biting(adjective, attack, respect, severe, keen) |
| cutting(adjective, attack, respect, severe, sharp) |
| sour(adjective, hard, severe, sharp, rough) |
| styptic(noun, adjective) |
| acerb(adjective, sharp, harsh, unpleasant, bitter) |
| hard(adjective, strong, tough, severe, sharp) |
| pungent(adjective, attack, respect, sharp, harsh) |
| trenchant(adjective, attack, respect, keen, sharp) |