The phrase "leaving open" refers to the act of not closing or finalizing something. There are different words that convey the same meaning, such as "uncertain," "undecided," and "unresolved." In some cases, "leaving open" can also mean "allowing for possibilities," and synonyms for this definition include "flexible," "adaptable," and "versatile." Additionally, "leaving open" can also mean "abandoning," and in this sense, synonyms include "forsaking," "relinquishing," and "discontinuing." Overall, the context of the sentence or situation will help determine the most appropriate synonym for "leaving open".