| influential(significant, vital, key, commanding, imposing) |
| integral(important, essential, critical, basic, fundamental) |
| irrevocable(necessary, required, obligatory, conclusive) |
| life-and-death(adjective, important) |
| life-or-death(adjective, important, essential, critical, basic) |
| life or death(expression, important, need, serious, essential) |
| lordly |
| maxim(noun, law, regulation, decree, instruction) |
| moral(noun, law, regulation, decree, instruction) |
| no alternative(expression, need, essential, requirement, prerequisite) |
| no choice(expression, need, essential, requirement, prerequisite) |
| norm |
| ordering(adjective, authoritative) |
| ought(obligation, necessity) |
| paramount(adjective, big, important, significant, substantial) |
| predicament(noun, position, condition, shape, situation) |
| prescript(noun, order, charge, rule, demand) |
| principal(adjective, big, important, significant, substantial) |
| pronouncement |
| significant(adjective, big, important, determined, substantial) |