Which legal term describes a partnership where at least one partner has unlimited liability?

The term that describes a partnership where at least one partner has unlimited liability is a general partnership. In a general partnership, all partners are actively involved in the business operations and share in the profits and losses of the business. Importantly, all partners in this structure have unlimited liability, meaning they are personally responsible for all debts and obligations of the partnership. This can put their personal assets at risk if the business incurs debt or faces legal judgments.

In contrast, a limited partnership consists of at least one general partner, who has unlimited liability, and one or more limited partners, whose liability is limited to the extent of their investment in the partnership. A corporation is a separate legal entity that protects its owners (shareholders) from personal liability beyond their investment, while a joint venture is a temporary partnership formed for a specific project or purpose, and liability varies based on the agreement between the parties involved. Thus, the characteristics of a general partnership align precisely with the definition provided in the question.