| must(need, essential, requirement, prerequisite, inevitability) |
| necessary(need, essential, requirement, prerequisite, inevitability) |
| no alternative(expression, need, essential, requirement, prerequisite) |
| no choice(expression, need, essential, requirement, prerequisite) |
| obligation(noun, need, essential, requirement, prerequisite) |
| pickle(fix, pass, distress, demand, need) |
| pinch(fix, pass, distress, demand, need) |
| plight(fix, pass, distress, demand, need) |
| precondition(need, essential, requirement, prerequisite, essentiality) |
| predicament(fix, pass, distress, demand, need) |
| prerequisite(need, essential, requirement, essentiality) |
| pressingness(fix, pass, distress, demand, need) |
| pressure(fix, pass, distress, demand, need) |
| privation(need, essential, requirement, prerequisite, essentiality) |
| quandary(fix, pass, distress, demand, need) |
| requirement(noun, fix, pass, distress, demand) |
| requisite(need, essential, requirement, prerequisite, essentiality) |
| requisiteness |
| scrape(fix, pass, distress, demand, need) |
| sine qua non(expression, idiom, need, essential, requirement) |