What term is used to describe a state of standing still or without motion?

The term that describes a state of standing still or being without motion is "static." In physics, "static" refers to an object that is at rest and not changing position over time. It indicates a lack of movement or change in a system's status.

The context of the word is important; for example, in engineering or mechanics, a static state often implies that the forces acting on an object are balanced, resulting in no net movement. This contrasts with dynamic, which refers to objects in motion or the forces causing motion. Kinetic, similarly, pertains specifically to motion and energy of moving objects. The term motionless also suggests a lack of movement but does not carry the broader connotation of stability or balance that "static" does in technical discussions, making "static" the more appropriate and precise term in this context.