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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Israel launched airstrikes on central and western Iran after Tehran fired missiles at Israel, jolting major cities with explosions and raising fears the region is sliding back toward all-out war.—
Jon Gambrell,
Los Angeles Times,
8 June 2026
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Mexican authorities have previously expressed fears they could be used as weapons by rowdy fans.—
Michael Rios,
CNN Money,
7 June 2026
Noun
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After years of planning, anticipation, hype and a growing concern over high ticket prices and immigration restrictions, the largest World Cup in history kicks off on Thursday in Mexico City and will run through July 19 across 16 cities in Mexico, the United States and Canada.—
Miami Herald,
Miami Herald,
11 June 2026
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The document also noted additional concerns.—
Ivan Taylor,
CBS News,
11 June 2026
Noun
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The Tonys are a place to put on a brave face, but will the anxiety creep in?—
Vulture Editors,
Vulture,
8 June 2026
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Acting as both tour guide and impromptu airplane anxiety therapist is all part of the job for Swanstrom.—
Arati Menon,
Condé Nast Traveler,
7 June 2026
Noun
-
Even Republican leaders expressed worries.—
Eric McDaniel,
NPR,
11 June 2026
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Flynn wants allied coordination and worries about unilateral overreach.—
Mayra Rodriguez Valladares,
Forbes.com,
11 June 2026
Noun
-
As terror has struck other cities around the world in recent months our shock and anger have been mixed with a growing sense of unease.—
Orlando Sentinel Editorial Board,
The Orlando Sentinel,
12 June 2026
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Its deeper unease is that these systems are connected to one another.—
Dara-Abasi Ita,
Forbes.com,
12 June 2026
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 13 Jun. 2026.
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