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.
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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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A lot of people get drawn into the fear, distracted by the thoughts in their head.—
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Many immigrant customers haven’t returned, while five of his former employees, despite having working papers, left Charlotte permanently out of fear.—
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.—
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Venezuelan immigrants and political refugees are celebrating the capture of President Nicolas Maduro, despite local protests and legal concerns.—
Noun
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Somehow, this new sensation emitted an awareness of the magnitude in which skateboarding would warp my life, which only ratcheted up the anxiety of blowing it.—
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The news this week that an ICE agent had shot and killed a woman in Minnesota heightened his anxiety.—
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.—
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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.—
Noun
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Mia Goth’s dual roles add another layer of unease.—
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Political turmoil added to unease up North.—
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 13 Jan. 2026.
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