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
By comparing the forward and backward series of operations, the new algorithm can see the effects of this perturbation throughout the molecule and so model the molecule as a whole.
—
IEEE Spectrum, 21 Oct. 2025
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
See All Example Sentences for perturbation
IEEE Spectrum, 21 Oct. 2025
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
See All Example Sentences for perturbation
Recent Examples of Synonyms for perturbation
Noun
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Those fears have eased somewhat in recent months as some Democratic candidates advance from the pack.—
Dakota Smith,
Los Angeles Times,
11 May 2026
-
Your co-parent is managing treatment, uncertainty and the very real fear of how this will affect his relationship with his daughter.—
Jann Blackstone,
Boston Herald,
10 May 2026
Noun
-
Accessibility Rooms for those with mobility needs are in place, and the fitness club, pool, spa, and public bathrooms also address accessibility concerns.—
Condé Nast,
Condé Nast Traveler,
14 May 2026
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Since then, a growing number of cities have opted to further regulate e-bikes, citing a growing number of incidents and safety concerns.—
Hannah Elsmore,
San Diego Union-Tribune,
14 May 2026
Noun
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But the following year, as the pandemic wore on and crime rates ticked up, the politics of criminal justice in the city shifted toward law-and-order anxiety, even as new waves of COVID infection struck the jails.—
Molly Fischer,
New Yorker,
11 May 2026
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War rumbles on Putin, who has ruled Russia as president or prime minister since the last day of 1999, faces a wave of anxiety in Moscow about the war in Ukraine, which has killed hundreds of thousands of people, left swathes of Ukraine in ruins, and drained Russia’s $3 trillion economy.—
Reuters,
NBC news,
10 May 2026
Noun
-
Another reasonable worry is energy.—
Editorial,
Boston Herald,
14 May 2026
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With one less worry – a safe home – Denise can now imagine a future for her family.—
Jayme Fraser,
USA Today,
14 May 2026
Noun
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Though the vote still failed largely along party lines, Murkowski's flip was a warning sign for the White House about the unease of some Republicans on Capitol Hill as the conflict drags on.—
Zachary Schermele,
USA Today,
13 May 2026
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Many Asian countries now count China as their largest trading partner, a reality that creates both opportunity and unease.—
Yu Jie,
Time,
13 May 2026
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 16 May. 2026.
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