What kind of obligation is described as having no condition attached?

The type of obligation that is characterized by having no conditions attached is a gratuitous obligation. This means that the obligation is imposed and must be fulfilled without any expectation of a reciprocal benefit or compensation. In a gratuitous obligation, the party providing the benefit does so purely out of goodwill, without any strings attached.

This distinguishes gratuitous obligations from other types, where conditions, obligations, or exchanges may exist. For example, in the context of analytic or private obligations, there may be conditions or specific terms regarding the fulfillment of the obligation. Pure obligations typically involve a clear-cut agreement that may still include some kind of conditions or responsibilities. Thus, the defining feature of gratuitous obligations is the absence of such conditions, making them unique in their nature and characteristic of unconditional giving.