| strictness(noun, easy, condition, discipline, firmness) |
| austerity(noun, easy, condition, discipline, firmness) |
| harshness(noun, easy, condition, discipline, firmness) |
| oral skills |
| severity(noun, easy, condition, discipline, firmness) |
| sternness(noun, easy, condition, discipline, firmness) |
| hardness(noun, easy, condition, discipline, firmness) |
| rigor(noun, easy, condition, discipline, firmness) |
| tightness |
| rigidity(noun, easy, condition, discipline, firmness) |
| rigorousness(noun, easy, condition, discipline, firmness) |
| toughness(noun, easy, condition, discipline, firmness) |
| acerbity(noun, discipline, firmness, sharpness, severity) |
| asperity(noun, sharpness, severity, harshness, conformity) |
| astringency(noun, sharpness, severity, harshness) |
| grimness(noun, discipline, firmness, severity, harshness) |
| meticulousness(noun, severity, harshness, conformity, strictness) |
| rigour |
| scarcity(noun, lack, deficiency, shortage) |
| sharpness(noun, discipline, firmness, severity, harshness) |