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
-
All of my rage and fear and wonder.—
Literary Hub,
Literary Hub,
1 June 2026
-
The computing power needs, the competition from Anthropic, the potential for a more business-to-business stream of revenue, the fear that all of the big institutions that own it will want to cash out, makes this one plain fraught.—
Jim Cramer,
CNBC,
31 May 2026
Noun
-
Analysts have previously expressed concern that US stocks of the interceptors have been depleted by the Iran conflict as well as by last year’s 12-day war between Israel and Iran, and noted that manufacturing more takes time.—
Lauren Kent,
CNN Money,
4 June 2026
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Those concerns that chopped 30% off cyber stocks earlier this year could not have been more wrong, as Jim Cramer had said all along.—
Zev Fima,
CNBC,
4 June 2026
Noun
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Schizophrenia, bipolar, autism, anxiety, depression – all of these topics are almost global bestsellers.—
Jon LaPook,
CBS News,
31 May 2026
-
While menopause is biological, many of the symptoms associated with it, including sleep disruption, anxiety, mood instability, brain fog, and fatigue, can also be amplified by chronic stress and nervous system overload.—
Meggen Harris,
Forbes.com,
31 May 2026
Noun
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Wembanyama finished with 26 points, 12 rebounds and three blocks in the loss but downplayed any worries about the team’s struggles after the game.—
Jacob Lev,
CNN Money,
4 June 2026
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Stocks also came under pressure on Middle East worries.—
Lee Ying Shan,Justina Lee,
CNBC,
4 June 2026
Noun
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The constant movement might make some audience members dizzy, yet its jitteriness signifies the anxiety and unease of the characters, both in their skin and with each other.—
Murtada Elfadl,
Variety,
25 May 2026
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All that party infighting — present before every primary, but at a fever pitch now — comes against a backdrop of broader voter unease about the war in Iran, volatile oil and gas prices, and the burgeoning threat of AI to the American workforce.—
Kevin Rector,
Los Angeles Times,
24 May 2026
Cite this Entry
“Perturbation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/perturbation. Accessed 6 Jun. 2026.
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