as in to vary
to pass from one form, state, or level to another temperatures will fluctuate between the low and high 50s today

Synonyms & Similar Words

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Antonyms & Near Antonyms

Synonym Chooser

How does the verb fluctuate differ from other similar words?

Some common synonyms of fluctuate are oscillate, sway, swing, undulate, vibrate, and waver. While all these words mean "to move from one direction to its opposite," fluctuate suggests constant irregular changes of level, intensity, or value.

fluctuating interest rates

When would oscillate be a good substitute for fluctuate?

Although the words oscillate and fluctuate have much in common, oscillate stresses a usually regular alternation of direction.

an oscillating fan

Where would sway be a reasonable alternative to fluctuate?

While in some cases nearly identical to fluctuate, sway implies a slow swinging or teetering movement.

trees swaying in the breeze

When can swing be used instead of fluctuate?

The synonyms swing and fluctuate are sometimes interchangeable, but swing implies a movement of something attached at one end or one side.

the door suddenly swung open

When is it sensible to use undulate instead of fluctuate?

In some situations, the words undulate and fluctuate are roughly equivalent. However, undulate suggests a gentle wavelike motion.

an undulating sea of grass

When might vibrate be a better fit than fluctuate?

While the synonyms vibrate and fluctuate are close in meaning, vibrate suggests the rapid oscillation of an elastic body under stress or impact.

the vibrating strings of a piano

When could waver be used to replace fluctuate?

The words waver and fluctuate can be used in similar contexts, but waver stresses irregular motion suggestive of reeling or tottering.

the exhausted runner wavered before collapsing

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of fluctuate Early estimates requested by House Democrats put the number of people who could lose coverage at more than 8 million, but that number continues to fluctuate and the Congressional Budget Office has not yet released its final score of the GOP bill, which is not yet even finalized itself. Jay O'Brien, ABC News, 20 May 2025 Along with the price warning, the big-box retailer stuck by its full-year forecast, but did not provide guidance for fiscal second-quarter earnings per share or operating income growth because of fluctuating U.S. tariff policy. Melissa Repko, CNBC, 20 May 2025 Don’t: Forget to Layer Do: Bring a Versatile Button-up $28 at Amazon The fluctuating temperature in NYC is enough to give you whiplash. Genevieve Cepeda, Travel + Leisure, 15 May 2025 The stock’s annual returns have fluctuated considerably, with a 45% gain in 2021, a sharp 89% decline in 2022, a strong rebound of 278% in 2023, and an exceptional 713% increase in 2024. Trefis Team, Forbes.com, 8 May 2025 See All Example Sentences for fluctuate
Recent Examples of Synonyms for fluctuate
Verb
  • The House Ways and Means Committee estimates this could boost take-home pay for a median-income family with two children by $4,000 to $5,000 annually and increase real wages by $2,100 to $3,300 per worker, though economic conditions may vary these gains.
    Brian Menickella, Forbes.com, 22 May 2025
  • Prices for one-day admission to Epic for the rest of the year vary daily and range from $139 (for four days in September) to $199 (from Christmas Eve through New Year’s Eve).
    Dewayne Bevil, The Orlando Sentinel, 22 May 2025
Verb
  • The summary will also be updated as new information is added, meaning new replies to the chain may change the summary at the top.
    James Peckham, PC Magazine, 30 May 2025
  • Even after taking over as captain ahead of the 2018-19 season, Barkov didn’t change his approach.
    Jordan McPherson, Miami Herald, 30 May 2025
Verb
  • That leadership change followed GOP gains through 2024’s Senate Bill 382, which shifted appointment powers from Gov. Josh Stein (D-NC) to Republican State Auditor Dave Boliek.
    Kaelan Deese, The Washington Examiner, 28 May 2025
  • As her backup dancers shifted position around her, Lopez locked lips with a male dancer, before a female dancer approached Lopez and kissed her as well.
    EW.com, EW.com, 27 May 2025

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Cite this Entry

“Fluctuate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fluctuate. Accessed 3 Jun. 2025.

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