There are many synonyms for the phrase "either way" that can be used to express the same or similar meanings. Some of the most common substitutes include "in any case," "regardless," "no matter what," "either direction," "one way or the other," "whichever," "anyway," and "alternatively." These terms can all be used in place of "either way" to convey similar ideas, such as a sense of indifference regarding two options or outcomes, or an understanding that multiple possibilities exist and may lead to similar results. Ultimately, the choice of synonym depends on the specific context and the writer's desired tone and emphasis.