| necessity(noun, order, understanding, pass) |
| need(noun, verb, order, understanding) |
| prerequisite(noun, form, pass, position) |
| essential(noun, form, pass, position) |
| proviso(noun, form, part, pass) |
| stipulation(noun, form, order, pass) |
| want(noun, verb, order, pass) |
| constraint(noun, understanding, pass, right) |
| imperative(noun, form, order, charge) |
| occasion(noun, form, order, understanding) |
| duress(noun, drive, power, pass) |
| pressure(noun, drive, power, pass) |
| acuteness(pass, distress, demand, need) |
| contingency(noun, form, pass, position) |
| crisis(pass, distress, demand, need) |
| criticalness(pass, distress, demand, need) |
| crossroad(pass, distress, demand, need) |
| demandingness(pass, distress, demand, need) |
| dilemma(pass, distress, demand, need) |
| distress(noun, trouble, force, pass) |