Which term indicates difficulty in movement or operation?

The term that indicates difficulty in movement or operation is "Schwergängig." This German word is often used to describe mechanisms or systems that are not functioning smoothly, causing resistance or requiring extra effort to operate. It can relate to both physical movements, such as a door that is hard to open, and mechanical systems that do not operate as intended. Therefore, the use of "Schwergängig" effectively conveys the concept of difficulty in movement or operation clearly and accurately.

The other terms do not convey this meaning. "Verdrehung," for instance, refers to twisting or a torsion effect, which doesn't inherently imply difficulty of movement. "Wassereinbruch" translates to "inflow of water," usually referring to unwanted water entering a structure, not mobility issues. "Entlüften" means to vent or release air, often in the context of removing air from fluid systems, which again is unrelated to the difficulty of movement.