fluctuated

Varied over time

Fluctuated is the past tense of fluctuate, meaning to rise and fall irregularly or shift back and forth.

Prices fluctuate with market conditions.

Temperatures fluctuate between day and night.

Her mood fluctuated wildly throughout the week.

The word implies repeated variation rather than a single change—an ongoing wavering between states or values.

oscillation

waver

Hesitate or fluctuate

alternate · cycle · pendulum · undulate · ebb · flow · seesaw · yo-yo · bounce · rebound

instability

volatile

Liable to sudden change

irregular · sporadic · unstable · variable · mercurial · capricious · fitful · turbulent · unsteady · shaky

variation

vary

To show differences

diverge · shift · adjust · modulate · calibrate · increment · gradient · spread · dispersion · variance

market

price

Monetary value assigned

interest rate · inflation · commodity · trading · volatility · rally · correction · bull · bear · index

Opposites
stability vs. variability

fluctuatedstabilized

Made steady or constant

steadied · leveled off · plateaued · persisted · endured

resolution vs. indecision

fluctuateddecided

Reached a conclusion

settled · resolved · committed · fixed · determined

Phrases
Family

fluctuate, fluctuation, fluctuating, fluctuations, fluctuates

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Top 100,000
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G