Putting something on an even keel means to stabilize or balance it. There are several synonyms that can be used in the place of this phrase, such as balancing, leveling, equalizing, or steadying. The concept of making something steady or balanced can also be conveyed through terms like evening out or smoothing over, while stabilizing can be replaced with notions of securing or consolidating. Other phrases that mean the same thing as put on an even keel could include restoring equilibrium, rectifying, or correcting. Whatever phrase or synonym is used, the idea is to ensure that something is no longer unsteady or unstable.