| Clue | Source | Date |
|---|---|---|
| Levels off for a while | ||
| Stops progressing | Newsday | 15 May 2021 |
| Levels off | USA Today | 22 Apr 2020 |
| Raised flat terrains also known as tablelands | ||
| Flat and high areas | The Times Concise | 31 Jan 2019 |
| Starts to stagnate | ||
| Reaches one's limit | ||
| Achievement levels | ||
| Flattens | ||
| Levels off | ||
| Levels off | ||
| Attainment levels | ||
| Flattens out | ||
| Grand Canyon vistas | ||
| Achievement levels | ||
| Tablelands | ||
| High spots | ||
| Tablelands | ||
| Flat dishes, as for tea service | ||
| Mesas | ||
| Flat extents in a graph. |