IPA: /flʌk.tʃuˈeɪ.ʃən.əl/
KK: /flʌkʧuˈeɪʃənl/
Relating to changes or variations that occur frequently or unpredictably.
The fluctuational nature of the stock market can make investing risky.
Fluctuational → It is formed from "fluctuare" (meaning to flow or wave) and the suffix "-tional" (indicating relating to or characterized by). The word "fluctuational" refers to something that is characterized by fluctuations or changes, often in a wave-like manner.
Think of 'flowing' or 'waving' ('fluctuare') to remember that 'fluctuational' describes something that is characterized by changes or variations.