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double check
double checknouna simultaneous check by two pieces in which the moving of one piece to give check also results in discovering a check by another piece.
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double-check
double-checkverb (used with or without object)to check twice or again; recheck.
double check
1 Americannoun
verb (used with or without object)
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double-checks,
present (3rd person singular)
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double-checked,
past participle, past
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double-checking
present participle
noun
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double-checks
plural
verb
noun
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a second examination or verification
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chess a simultaneous check from two pieces brought about by moving one piece to give check and thereby revealing a second check from another piece
Other Word Forms
Inflected Forms
Nouns
Participles
Conjugated Forms
Present
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double-checksimple
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double-checkssimple
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have double-checkedperfect
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has double-checkedperfect
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am double-checkingprogressive
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are double-checkingprogressive
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is double-checkingprogressive
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have been double-checkingperfect progressive
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has been double-checkingperfect progressive
Past
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double-checkedsimple
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had double-checkedperfect
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was double-checkingprogressive
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were double-checkingprogressive
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had been double-checkingperfect progressive
Future
Etymology
Origin of double-check
An Americanism dating back to 1950–55
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Moreover, workers may also have outsize expectations around AI’s automation capabilities, with many of the current tools still requiring workers to double check the completed work for errors.
From Barron's ● Mar. 27, 2026
If in doubt, call your insurance company to double check.
From MarketWatch ● Dec. 10, 2025
Last year one of its accounts posted a video inside the REI Soho bathroom to double check it was still open and provided free menstrual products to visitors.
From The Wall Street Journal ● Oct. 17, 2025
But double check that the expiry date on your passport is dated at least three months after the day you plan to leave.
From BBC ● Jun. 28, 2025
As a double check, however, both men were questioned on this point.
From The Report on Unidentified Flying Objects by Edward J. Ruppelt
The first time he put the camera behind a row of fans, I had to look over the edge of my 3D glasses to double-check that those waving arms weren’t really in my theater.
From Los Angeles Times ● May 7, 2026
It means bad AI output compounded by lazy humans who can’t be troubled to double-check.
From Barron's ● May 6, 2026
Always double-check the latest guidance from the IRS.
From MarketWatch ● Apr. 24, 2026
"If something doesn't feel right, trust your instincts and take a moment to double-check before making a payment," they said.
From BBC ● Mar. 29, 2026
I double-check the address to make sure I’m in the right place.
From "The Wrong Way Home" by Kate O’Shaughnessy
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Then he double-checks my claim, asking: “The court hadn’t said it in Students for Fair Admissions?”
From The Wall Street Journal ● Aug. 7, 2026
Even though she has filters set up, Tabacnic always double-checks to make sure her matches are actually where the dating app says they are.
From MarketWatch ● Jun. 3, 2026
For example, one arm of the AI generates the response, and another instantly double-checks it to make sure it’s safe before letting it through to the user.
From Los Angeles Times ● Jul. 22, 2025
In Colorado, Dr. Michelle Barron said the consistently low COVID-19 hospitalizations prompted smiles among staff, even as she double-checks the numbers to make sure they’re actually correct.
From Seattle Times ● Apr. 1, 2022
Far up a third climb, Werner unfolds the map and double-checks his bearings with a compass.
From "All the Light We Cannot See" by Anthony Doerr
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If I hadn’t double-checked the tickets, we would have missed the 9:33 a.m. departure.
From The Wall Street Journal ● Mar. 25, 2026
After hearing its predictions for the Sweet 16 round I double-checked the data.
From MarketWatch ● Mar. 18, 2026
She added: "I double-checked I locked the door. I couldn't work out how he was in my room because I did everything that I would deem to be correct when you stay in a hotel."
From BBC ● Mar. 5, 2026
The film’s access coordinator Chantelle Nassari also equipped Bode with a fully accessible trailer, double-checked the day’s pathways and ensured the actor had what she needed to be able to perform.
From Los Angeles Times ● Nov. 20, 2024
Sierra double-checked that Lázaro’s meds were all in order, his glass of water filled, his slippers by the bed.
From "Shadowshaper" by Daniel José Older
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“Just double-checking my directions back into town,” I said.
From Slate ● Jun. 19, 2025
The state appears to have presented a figure without fully explaining its methodology or double-checking the information, said Becker, who is a former senior trial attorney in the voting section of the U.S.
From Salon ● Oct. 15, 2024
Twinning is a way of double-checking gold is present by drilling next to the place it has been found and taking rock samples.
From BBC ● May 18, 2024
By double-checking that the hyperplane function contains squared values, a human can easily verify that the function is positive, which means the trajectory is collision-free, Amice explains.
From Science Daily ● Mar. 7, 2024
Every engineer and mathematician had a story of double-checking the machines’ data only to find errors.
From "Hidden Figures" by Margot Lee Shetterly
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.