fluctuate
US /ˈflʌk.tʃu.eɪt/
UK /ˈflʌk.tʃu.eɪt/

1.
fluctueren, schommelen, variëren
rise and fall irregularly in number or amount
:
•
The stock market prices fluctuate daily.
De beurskoersen fluctueren dagelijks.
•
Her mood often fluctuates between happiness and sadness.
Haar humeur schommelt vaak tussen geluk en verdriet.