| uncompromising(adjective, hard, severe, rough, difficult) |
| stiff(adjective, hard, severe, rough, difficult) |
| caustic(adjective, severe, physical energy) |
| convincing(verb, adjective, good, strong, sound) |
| grim(adjective, tough, severe, firm, harsh) |
| precise(adjective, severe, exact, accurate) |
| relentless(adjective, set, hard, severe, sharp) |
| Spartan(adjective, severe) |
| exigent(adjective, difficult, severity, taxing) |
| forcible(adjective, strong, energetic, violent, powerful) |
| peremptory(adjective, affected, duty, severity, compulsion) |
| restrictive |
| astringent(adjective, severe, harsh, cruel, serious) |
| authoritarian(adjective, tough, severe, firm, harsh) |
| bleak(adjective, tough, severe, harsh, cruel) |
| correct(adjective, severe, exact, strict, scrupulous) |
| drastic(adjective, severe, harsh, cruel, brutal) |
| effective(adjective, strong, energetic, violent, powerful) |
| mordant(adjective, physical energy) |
| obdurate(adjective, tough, severe, harsh, cruel) |