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  • double check
    double check
    noun
    a simultaneous check by two pieces in which the moving of one piece to give check also results in discovering a check by another piece.
  • double-check
    double-check
    verb (used with or without object)
    to check twice or again; recheck.
Synonyms

double check

1 American  

noun

Chess.
  1. a simultaneous check by two pieces in which the moving of one piece to give check also results in discovering a check by another piece.


double-check 2 American  
[duhb-uhl-chek] / ˈdʌb əlˈtʃɛk /

verb (used with or without object)

  • double-checks,
    present (3rd person singular)
  • double-checked,
    past participle,  past
  • double-checking
    present participle
  1. to check twice or again; recheck.


noun

  • double-checks
    plural
  1. a second examination or verification to assure accuracy, proper functioning, or the like.

double-check British  

verb

  1. to check twice or again; verify

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a second examination or verification

  2. 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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

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

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

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

“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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