stagnant

This term evokes a sense of stillness that has turned negative. When applied to water, it suggests a lack of oxygen and the accumulation of decay, creating a visceral image of foulness and inertia. In economic or professional contexts, it describes a frustrating plateau where progress has ceased. It differs from "stable" or "steady" by implying that the lack of movement is a failure or a problem rather than a desired state of equilibrium.