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
Massively parallel genetic perturbation suggests the energetic structure of an amyloid-β transition state.
—Ian Randall, MSNBC Newsweek, 13 June 2025
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
Massively parallel genetic perturbation suggests the energetic structure of an amyloid-β transition state.
—Ian Randall, MSNBC Newsweek, 13 June 2025
See All Example Sentences for perturbation
Recent Examples of Synonyms for perturbation
Noun
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The result came after Milei’s party suffered a landslide defeat to the Peronist opposition in a September local vote in the Buenos Aires province, an outcome that sparked a selloff of the peso amid investor fears over the president’s standing with voters.—
Jason Ma,
Fortune,
27 Oct. 2025
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Harrison expressed deep fears that the White House could take an ax to CPB and public media more broadly.—
David Folkenflik,
NPR,
27 Oct. 2025
Noun
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Takaichi was expected to raise Japan’s security concerns about Beijing’s military build-up to Trump during his visit.—
Miranda Jeyaretnam,
Time,
28 Oct. 2025
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Fears of climate change are decreasing in the United States, China and many Western countries relative to other concerns, according to a new survey.—
Matthew Tostevin,
MSNBC Newsweek,
28 Oct. 2025
Noun
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That driving tension and anxiety are largely thanks to the team of artisans, which included composer Volker Bertelmann, editor Kirk Baxter and sound designer Paul Ottosson, who worked closely behind the scenes on their respective crafts to bring it together.—
Jazz Tangcay,
Variety,
25 Oct. 2025
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That sense of anxiety is present throughout the book, most vividly in a wide shot of a group of cheerleaders rehearsing in a gym.—
Rachel Monroe,
New Yorker,
25 Oct. 2025
Noun
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Shanahan, the head coach in Washington from 2010 to 2013, once grilled Paulsen on offensive tackle protections out of worry the tight end might have to play emergency tackle in a preseason game.—
Jourdan Rodrigue,
New York Times,
25 Oct. 2025
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Those worries resulted in a European bank stock selloff last week, although the sector quickly rebounded.—
Tasmin Lockwood,
CNBC,
24 Oct. 2025
Noun
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Unlike past contests, this vote has unfolded against a backdrop of deep sociopolitical unease and visible youth engagement.—
Amindeh Blaise Atabong,
semafor.com,
27 Oct. 2025
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This shift, unprecedented in modern Japanese history, has prompted unease among nationalist groups and some conservative politicians.—
Micah McCartney,
MSNBC Newsweek,
27 Oct. 2025
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 30 Oct. 2025.
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