| obligatory(adjective, certain, significant, essential, basic) |
| predetermined(adjective, coming, intended, designed, meant) |
| unalterable(adjective, expected, predictable, necessary, inexorable) |
| definite(adjective, certain, unquestionable, undisputable) |
| essential(adjective, set, significant, basic, vital) |
| fatal |
| impending(adjective, bound, likely, possible, necessary) |
| ineludible(adjective, obvious, bound, necessary, inexorable) |
| inevasible(adjective, near, obvious, bound, likely) |
| unchangeable(adjective, certain, unquestionable, undisputable, inevitable) |
| uncontrollable(strong, necessity, overwhelming) |
| unpreventable(adjective, expected, predictable, necessary, inexorable) |
| unstoppable |
| determined(adjective, expected, predictable, necessary, inexorable) |
| eventual |
| fixed(adjective, certain, expected, predictable, necessary) |
| foreordained(near, necessary, coming, inexorable, intended) |
| hard |
| preordained(adjective, expected, predictable, intended, ordained) |
| relentless |