(FLAT) [adjective] - flat and smooth, or on the same levelWe resurfaced the kitchen floor because it wasn't even enough for Dad's wheelchair.We couldn't make the living room floor even with the dining room so we put a ramp over the step.If something is on an even keel it is regular and well-balanced and not likely to change suddenly.The new manager succeeded in putting the business back on an even keel.
EVEN
Meaning of EVEN in English
Cambridge English vocab. Кембриджский английский словарь. 2012