A "sweetheart contract" is often used to describe an agreement made between two parties, especially in a business context, that favors one side heavily over the other. It can also be referred to as a "lopsided deal," "one-sided agreement," or "unfair contract." Similar terms include "biased contract," "unequal partnership," and "unequal agreement." These types of arrangements can lead to conflict down the road if one party feels they were taken advantage of or were not given a fair deal. It is important to carefully review any contract before signing to ensure both parties are benefiting equally.