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level something off
to make something level or smooth. You are going to have to level the floor off before you put the carpet down. Please level off the floor.
[for variation or fluctuation in the motion of something] to diminish; [for a rate] to stop increasing or decreasing. The plane leveled off at 10,000 feet. After a while the workload will level off. Things will level off after we get through the end of the month.
Move toward stability or consistency, as in Prices have leveled off. This idiom transfers a physical flattening to a figurative one. [Mid-1900s]
1. To come to follow an even, flat path after rising or falling to some level: The airplane leveled off at 5,000 feet.
2. To stop changing after rising or falling to some level: Milk prices leveled off at $2 per gallon.
3. To make something smooth or flat: The carpenter used a plane to level off the top of the cabinet. I placed the uneven piece of molding in the vise and leveled it off with a file.