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
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
-
A lot of people get drawn into the fear, distracted by the thoughts in their head.—
Marcus Thompson II,
New York Times,
7 Jan. 2026
-
Many immigrant customers haven’t returned, while five of his former employees, despite having working papers, left Charlotte permanently out of fear.—
Liz Rothaus Bertrand,
Charlotte Observer,
7 Jan. 2026
Noun
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The measures, which had been agreed to in writing in mid-November 2023, were intended to address Lively’s concerns about on-set conduct and safety.—
Elizabeth Rosner,
PEOPLE,
7 Jan. 2026
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Venezuelan immigrants and political refugees are celebrating the capture of President Nicolas Maduro, despite local protests and legal concerns.—
Ray Padilla,
Louisville Courier Journal,
7 Jan. 2026
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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Meanwhile Syria remains scarred by years of conflict and nationals in Germany are looking on at the debate with mounting worry.—
Sophie Tanno,
CNN Money,
9 Nov. 2025
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Leaders at big carmakers spelled out their worries in the latest round of earnings calls, saying that finding a replacement for Nexperia at scale in the short term will be difficult.—
Boston Herald Wire Services,
Boston Herald,
8 Nov. 2025
Noun
-
Mia Goth’s dual roles add another layer of unease.—
Ana Gutierrez,
Austin American Statesman,
5 Jan. 2026
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Political turmoil added to unease up North.—
Stephanie Hughes,
Fortune,
31 Dec. 2025
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 9 Jan. 2026.
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