Synonym Chooser

How does the verb vacillate differ from other similar words?

Some common synonyms of vacillate are falter, hesitate, and waver. While all these words mean "to show irresolution or uncertainty," vacillate implies prolonged hesitation from inability to reach a firm decision.

vacillated until events were out of control

When is it sensible to use falter instead of vacillate?

While the synonyms falter and vacillate are close in meaning, falter implies a wavering or stumbling and often connotes nervousness, lack of courage, or outright fear.

never once faltered during her testimony

When would hesitate be a good substitute for vacillate?

The words hesitate and vacillate are synonyms, but do differ in nuance. Specifically, hesitate implies a pause before deciding or acting or choosing.

hesitated before answering the question

When could waver be used to replace vacillate?

Although the words waver and vacillate have much in common, waver implies hesitation after seeming to decide and so connotes weakness or a retreat.

wavered in his support of the rebels

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 vacillate The president has vacillated in recent months between deporting all individuals who are in the country illegally and being sympathetic to farmers and hospitality executives who rely on such migrant workers for labor. Brett Samuels, The Hill, 4 July 2025 Christopher Landon is a master at making audiences vacillate between gut-wrenching terror and gut-busting laughter. Katcy Stephan, Variety, 11 Apr. 2025 Since then, tariff rates have vacillated quite a bit as negotiations with trading partners continued. Mike Patton, Forbes.com, 25 June 2025 As the hours ticked by on Friday, reactions in Israel vacillated between extremes. Ruth Margalit, New Yorker, 13 June 2025 See All Example Sentences for vacillate
Recent Examples of Synonyms for vacillate
Verb
  • But in volatile and uncertain times, many leaders hesitate to act, and others simply freeze up.
    Harvard Business Review, Harvard Business Review, 31 July 2025
  • If you’re selected for an interview, don’t hesitate to ask the hiring manager whether a degree is truly required or if relevant experience counts.
    Johnny C. Taylor Jr, USA Today, 29 July 2025
Verb
  • After Democrats took control of the Senate in 2021 with President Joe Biden in the White House, efforts to address the cap again faltered, despite efforts by Pritzker and other Democratic governors who wrote Biden a letter that spring calling for it to be eliminated.
    Dan Petrella, Chicago Tribune, 28 July 2025
  • Trump's ratings on some of the most significant issues facing the country also faltered, according to Gallup pollsters.
    Kathryn Palmer, USA Today, 27 July 2025

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Cite this Entry

“Vacillate.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vacillate. Accessed 7 Aug. 2025.

More from Merriam-Webster on vacillate

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