| Rating | Solver | Clue |
|---|---|---|
| PRECONDITION | Prerequisite | |
| MUST | Prerequisite | |
| STIPULATION | Prerequisite | |
| PREREQUISITE | Previously required; necessary as a preliminary to any proposed effect or end; as, prerequisite conditions of success. | |
| ANTEPREDICAMENT | A prerequisite to a clear understanding of the predicaments and categories, such as definitions of common terms. | |