| Answer | Crossword Clue |
|---|---|
| requirements | A thing that is compulsory; a necessary condition |
| requirement | A thing that is compulsory; a necessary condition |
| requisites | A thing that is necessary for the achievement of a specified end |
| prerequisite | A thing that is required as a prior condition for something else to happen or exist |
| prerequisites | A thing that is required as a prior condition for something else to happen or exist |
| essentials | A thing that is absolutely necessary |
| inessentials | A thing that is not absolutely necessary |
