"Leave in a lurch" is a common phrase used to describe the act of abandoning or leaving someone in a difficult situation. There are several synonyms for this phrase such as leaving someone high and dry, leaving someone stranded, deserting someone, leaving someone hanging, and leaving someone in the lurch. All of these expressions convey the idea of leaving someone helpless and without support. These phrases can be used in various contexts like in personal relationships, business deals, and other situations where one party depends on the other for assistance or support. Regardless of the situation, it is never a good thing to "leave someone in a lurch".