| Rating | Solver | Clue |
|---|---|---|
| UNAVOIDABLE | Necessary | |
| NEEDED | Necessary | |
| ESSENTIAL | Necessary | |
| NEEDFUL | Necessary | |
| INVOLVE | Make necessary | |
| ENOUGH | As necessary | |
| ADHOC | As necessary | |
| NECESSITATE | Make necessary | |
| ENTAIL | Be necessary | |
| BEHOOVE | Be necessary | |
| VITAL | Absolutely necessary | |
| PREREQUISITES | Necessary conditions | |
| MAIN | Important; necessary. | |
| NEEDY | Necessary; requiste. | |
| NECESSARIES | Of Necessary | |
| AD HOC | As necessary (2,3) | |
| ATAPUSH | Only if necessary | |
| INAPINCH | If absolutely necessary | |
| ATAPINCH | If absolutely necessary | |
| PREREQUISITE | Necessary prior condition | |
| NEEDMENT | Outfit; necessary luggage. | |
| LENGTHY | Lasting longer than necessary | |
| DRAWNOUT | Lasting longer than necessary | |
| ABLE | Having the necessary skills | |
| NECESSITUDE | Necessary connection or relation. | |