| mandatory(adjective, set, significant, affected, essential) |
| obligatory(adjective, sound, important, certain, true) |
| necessary(adjective, cruel, essential, pitiless, obligation) |
| required(adjective, significant, essential, basic, vital) |
| requisite(adjective, significant, essential, basic, vital) |
| indispensable(adjective, set, important, significant, essential) |
| imperative(adjective, set, important, significant, essential) |
| essential(adjective, set, important, significant, critical) |
| forced(adjective, affected, willing, strained, unnatural) |
| binding(adjective, sound, certain, true, significant) |
| inevitable(adjective, certain, near, obvious, necessity) |
| involuntary(adjective, affected, strained, unwilling, unnatural) |
| compelling(adjective, violent, significant, essential, basic) |
| imperious(adjective, commanding, required, authoritative, domineering) |
| inescapable(adjective, cruel, pitiless, unrelenting, coming) |
| constraining(adjective, required, obligatory) |
| vital(adjective, set, important, significant, essential) |
| pressing(adjective, important, significant, essential, critical) |
| coercive(adjective, violent, affected, aggressive, compulsion) |
| compelled(adjective, near, affected, coming, intended) |