| strict(adjective, hard, severe, rough, firm) |
| rigid(adjective, hard, tough, severe, rough) |
| austere(adjective, hard, tough, severe, rough) |
| authoritarian(adjective, tough, severe, firm, harsh) |
| dead set(expression, adjective, tough, severe, firm) |
| demanding(adjective, hard, severe, rough, difficult) |
| disciplinary(adjective, tough, severe, firm, harsh) |
| dour(adjective, tough, severe, firm, harsh) |
| draconian(adjective, tough, severe, firm, harsh) |
| exacting(adjective, hard, tough, severe, rough) |
| firm(adjective, tough, severe, harsh, solid) |
| forbidding(adjective, tough, severe, firm, harsh) |
| hard(adjective, tough, severe, rough, firm) |
| hard-boiled(adjective, tough, severe, firm, harsh) |
| harsh(adjective, tough, severe, firm, stiff) |
| iron-fisted(adjective, tough, severe, firm, harsh) |
| no-nonsense(adjective, tough, severe, firm, harsh) |
| nonindulgent |
| oppressive(adjective, hard, tough, severe, rough) |
| picky(adjective, tough, severe, firm, harsh) |