fluctuate
Translation
to fluctuate, to vary
Examples
The price of gas tends to fluctuate.
The price of petrol tends to fluctuate.
His mood fluctuates from day to day.
His mood fluctuates from day to day.
Grammar Patterns
((sth.)) fluctuates (sth.) rises and falls irregularly Temperatures fluctuate during the day.
Similar Words
Synonyms: vary, oscillate, waver, swing
Etymology
From Latin 'fluctuare', from 'fluctus' (a wave).
Memory Tips
Think of things that 'flow' like water waves, going up and down.