fluctuate

CEFR: B2

To rise and fall irregularly in number, amount, volume, or level over time. Essential verb for describing volatile trends in IELTS Writing Task 1 line graphs.

Synonyms

vary
oscillate

Common Collocations

fluctuate wildly
fluctuate between
tendency to fluctuate

Example Sentence

Crude oil prices fluctuated wildly between forty and eighty dollars per barrel throughout the fiscal year.