fluctuant
🇺🇸
/'flʌktʃʊrnt/
🇬🇧
/ˈflʌktjʊənt/
Varying in a way that changes often and unpredictably.
The weather has been fluctuant, with sudden changes in temperature.
In medical terms, when a swelling feels soft and changes shape when touched.
The doctor detected a fluctuant mass, suggesting a fluid-filled cyst.