inertia
[U] Uncountable
This term carries a heavy sense of stubbornness or stagnation. In a scientific sense, it is a neutral property of mass, but when applied to human behavior or business, it is almost always negative, implying a lazy or paralyzed state where the status quo persists simply because it is easier than changing. It differs from apathy in that inertia suggests a systemic or structural inability to move, whereas apathy is a lack of desire. Inertia describes a state of being stuck in a rut, where the momentum of the past continues to dictate the present regardless of the current necessity for a new direction.
Used as a singular mass noun to describe the physical property of matter or the psychological state of inactivity.