as in fear
an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble
in her perturbation she kept calling her son, a freshman, to see if everything was all right at college
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Example Sentences
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Recent Examples of perturbation
Quantum machines of today are prone to errors, have a restricted size range, and are sensitive to perturbations in their surrounding environment.
—
Chuck Brooks, Forbes.com, 29 Aug. 2025
To identify the quantum states of a particle, scientists need to isolate it from perturbations arising from its surroundings.
—Ameya Paleja, Interesting Engineering, 8 Aug. 2025
In the short term, the position of a satellite's orbit will remain unchanged on this reference map without any perturbation.
—Robert Pearlman, ArsTechnica, 11 July 2025
Post-hoc methods like Shap and LIME, though well-used, have challenges in efficacy, particularly because of the quality of explanations and the influence of perturbation on the final explanations.
—Vinay Kumar Sankarapu, Forbes, 4 Oct. 2024
See All Example Sentences for perturbation
Chuck Brooks, Forbes.com, 29 Aug. 2025
To identify the quantum states of a particle, scientists need to isolate it from perturbations arising from its surroundings.
—Ameya Paleja, Interesting Engineering, 8 Aug. 2025
In the short term, the position of a satellite's orbit will remain unchanged on this reference map without any perturbation.
—Robert Pearlman, ArsTechnica, 11 July 2025
Post-hoc methods like Shap and LIME, though well-used, have challenges in efficacy, particularly because of the quality of explanations and the influence of perturbation on the final explanations.
—Vinay Kumar Sankarapu, Forbes, 4 Oct. 2024
See All Example Sentences for perturbation
Recent Examples of Synonyms for perturbation
Noun
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Despite the occasional mutual love, progressives have argued that Sliwa has previously stoked racist fears and encouraged vigilante aggression.—
Naaman Zhou,
New Yorker,
3 Nov. 2025
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Glossier is supporting other alumni of its 5-year-old grant program this year because of the challenges so many of these emerging brands are facing—and despite political fear among many other companies to keep these kinds of programs going.—
Emma Hinchliffe,
Fortune,
3 Nov. 2025
Noun
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The deployment has also raised concerns about racial profiling, wrongful arrests, and political pressure on law enforcement to align with federal immigration crackdowns.—
Sasha Rogelberg,
Fortune,
3 Nov. 2025
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He was included on the short list of presidential candidates in 2022 when Democrats started airing concerns about then-President Joe Biden's ability to run for a second term.—
Phillip M. Bailey,
USA Today,
3 Nov. 2025
Noun
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The attendees—thirty- and forty-somethings who are members of the bank’s Private Wealth Management (PWM) division, which boasts an average account size of over $75 million—gathered to hash out their anxiety and excitement.—
Emma Burleigh,
Fortune,
9 Nov. 2025
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Barton will have to wait another month to receive his sentence for the six guilty counts the jury returned on charges of sending a grossly offensive electronic communication with intent to cause distress or anxiety to football broadcasters Eni Aluko and Lucy Ward, and TV and radio host Jeremy Vine.—
Greg O'Keeffe,
New York Times,
9 Nov. 2025
Noun
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For Dillon Robertson, 32, money is a constant worry.—
Elena Moore,
NPR,
2 Nov. 2025
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The latter film was made based on the confessions of young people living in Latvia who openly spoke of patronizing teachers and parents, worries for the future and fears over fallout from the Chernobyl nuclear disaster.—
Will Tizard,
Variety,
2 Nov. 2025
Noun
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But each story adds to the uncertainty and unease in the air.—
Brian Stelter,
CNN Money,
31 Oct. 2025
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The unease was amplified by the woman’s explanation that the prints appeared in an area of the apartment not easily accessed.—
Melissa Fleur Afshar,
MSNBC Newsweek,
31 Oct. 2025
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 10 Nov. 2025.
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