fluctuation
🇺🇸
/ˌflʌktʃuˈeɪʃn/
🇬🇧
/ˌflʌktʃuˈeɪʃn/
frequent changes in size, amount, or quality, often going up and down
The stock market shows daily fluctuation in prices.
株式市場は毎日価格の変動を示す。