Cross over is a common phrase that can be used to describe a variety of actions, from literally crossing over a physical boundary to transcending societal or cultural barriers. There are many synonyms for the phrase, each with its own connotation and context. For example, to cross from one side to the other, one might use words like jump, traverse, or navigate. To speak to or work with someone from a different culture, the phrases collaborate, merge, or blend might be more appropriate. In music, crossover refers to a piece or genre that blends different styles together. Whatever the context may be, there is always a synonym for cross over that can help to convey the intended meaning more clearly.