| Answer | Crossword Clue |
|---|---|
| INESSENTIAL | Not required |
| NEEDLESS | Not required. |
| OPTIONAL | Not required |
| ELECTIVE | It's not required |
| NOFEE | "Payment not required" |
| ELECTIVE | Course that's not required |
| TIE | It's not required for casual Fridays |
| SIXSTORY | Like the maximum-height New York City apartment building that's not required to have a fire evacuation plan |
