| Clue | Source | Date |
|---|---|---|
| It's of great importance the head gets precedence over others (3,8) | ||
| Number-one thing to do | USA Today | 11 Apr 2022 |
| *First thing to do on a to-do list | New York Times | 12 May 2020 |
| Most important | Universal | 29 Dec 2017 |
| Most important, on an agenda | USA Today | 13 Dec 2017 |
| Most important | ||
| Most important, on an agenda | ||
| Like the first item on a to-do list, perhaps | ||
| Most important "to-do" item | ||
| *Thing to do first | ||
| *Thing to do first |