plateau
a flat raised area or a period of little progress
Root
- plat / plate: flat, broad, or flattened into dullness
Other words with the plat / plate root
Plateau keeps plat as flat: a high flat surface, then a flat stretch in progress.
After three weeks of improvement, her score reached a plateau.
Plateau is useful because the image is physical before it becomes abstract. A landscape rises and then flattens; a skill improves and then levels off.