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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Recent Examples of perturbation
But otherwise the climate, through its perturbations, has maintained conditions conducive to animal life for nearly a half-billion years.
—
Peter Brannen, Quanta Magazine, 15 Sep. 2025
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
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
Peter Brannen, Quanta Magazine, 15 Sep. 2025
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
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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Nearly a quarter of New Orleans residents live in poverty, and the prospect of a substantial windfall for a few hours’ work apparently outweighed any fear of getting into a car that was about to take part in a high-speed accident.—
Patrick Radden Keefe,
New Yorker,
13 Apr. 2026
-
Esther says Kim had shared her fear of Terry Rose well before her disappearance.—
Peter Van Sant,
CBS News,
12 Apr. 2026
Noun
-
Even before the Iran war sent gas prices soaring, many Americans were still recovering from the pandemic-era inflation spike and continued to cite affordability as a major concern.—
Aimee Picchi,
CBS News,
9 Apr. 2026
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Another Antarctic species -- the Southern elephant seal -- is also now at risk of extinction due to bird flu, moving from least concern to vulnerable, according to researchers.—
ABC News,
ABC News,
9 Apr. 2026
Noun
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Last year’s Public Service Commission flips were a blaring warning sign in a cycle dominated by voter anxiety over affordability and utility costs.—
Greg Bluestein,
AJC.com,
12 Apr. 2026
-
For weeks, Hilton and Bianco have led polls while eight prominent Democrats including Swalwell split the support of liberal voters, stoking anxiety among Democrats that the party could end up shut out of the November election.—
Seema Mehta,
Los Angeles Times,
12 Apr. 2026
Noun
-
At a recent seven-hour legislative meeting, Nevadans complained to lawmakers about the noise data centers produce, and their worries about how the centers will affect water supply and energy bills.—
Jessica Hill,
Fortune,
9 Apr. 2026
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Memories of the pandemic and worries about crime were still fresh, and the 120,000-square-foot building was vacant.—
Brian J. Rogal,
Chicago Tribune,
9 Apr. 2026
Noun
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That feeling can present in many ways — rumination, a knot in your throat or your chest, an unease in your stomach, the tensing of muscles.—
Goth Shakira
Contributing,
Los Angeles Times,
10 Apr. 2026
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John Maynard Keynes famously predicted in the 1930s that by 2030, a 15-hour work week would be possible—and then asked, with obvious unease, what people would do with all that free time.—
Nick Lichtenberg,
Fortune,
9 Apr. 2026
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 15 Apr. 2026.
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