Vicissitudinous

The adjectival designation "vicissitudinous" is employed to elucidate the inherent quality of being marked by or subjected to vicissitudes, wherein the term "vicissitudes" itself encompasses the spectrum of natural alterations, variations, or fluctuations that transpire throughout the continuum of a given entity's existence, insinuating the capricious undulations, alternations, or shifts in circumstances that encapsulate an element of unpredictability or variability. Essentially, when an entity is characterized as vicissitudinous, it denotes a proclivity for a sequential array of alterations or variations manifesting over the temporal expanse.

The vicissitudinous nature of the stock market became evident as the values of various securities experienced unpredictable fluctuations throughout the trading day.

Her career, marked by a vicissitudinous journey through diverse industries and roles, showcased her adaptability in the face of ever-changing professional landscapes.

The vicissitudinous climate of the region, with its sudden weather shifts and unpredictable storms, posed a constant challenge for the residents who had to adapt to the varying environmental conditions.