| simple(adjective, characteristic, hard, lower, obscure) |
| unkind(adjective, hard, tough, harsh, cruel) |
| astringent(adjective, characteristic, strong, hard, tough) |
| draconian(adjective, tough, firm, harsh, rigid) |
| penetrating(adjective, strong, cool, keen, sharp) |
| racking(adjective, pain) |
| scrupulous(adjective, hard, correct, rough, firm) |
| stinging(adjective, strong, cool, keen, sharp) |
| stony(adjective, mean, hard, tough, harsh) |
| tormenting(adjective, painful, sickness, ache, anguishes) |
| unrelenting(adjective, appearance, mean, strong, hard) |
| wicked(adjective, clear, hard, tough, sharp) |
| acrimonious(adjective, mean, tough, evil, sharp) |
| adamant(adjective, mean, strong, hard, tough) |
| authoritarian(adjective, strong, hard, tough, firm) |
| autocratic |
| bad(adjective, offensive, intense, terrible, foul) |
| despotic(adjective, difficult, harsh) |
| exact(adjective, clear, correct, harsh, solid) |
| fastidious(adjective, tough, problematic, trying, disapprobation) |