A "prenup," short for prenuptial agreement, is a legal contract made by a couple before they get married. This agreement outlines how their assets and debts will be divided in case of divorce or separation. It can also address issues like spousal support and property rights, helping to clarify expectations and protect individual interests. Prenups are especially useful for individuals with significant assets, business ownership, or children from previous relationships. By having a prenup, couples can reduce potential conflicts and misunderstandings in the future, making it a practical step for many entering into marriage.