wisselvalliger
Wisselvalliger is a Dutch word that translates to more variable, more inconsistent, or more erratic. It is the comparative form of the adjective "wisselvallig," which means variable or inconsistent. The term is often used to describe weather patterns that are unpredictable, with frequent changes in temperature, precipitation, or sunshine. For example, one might say "Het weer is vandaag wisselvalliger dan gisteren" which means "The weather today is more variable than yesterday."
Beyond weather, wisselvalliger can also be applied to describe situations, performance, or behavior that fluctuates significantly.