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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

It also advises users to double check responses for accuracy - a common caveat accompanying AI chatbots, which can be known to state false information in a matter of fact, convincing way.

From BBC ● Jun. 20, 2025

It marks, however, a double check to Louis XIV.

From The Conquest of New France A chronicle of the colonial wars by George McKinnon Wrong

Since then, Goblikon has become a fully fleshed-out character and the host of the purportedly No. 1 podcast “Right Now With John Goblikon,” a fact Goblikon encouraged me not to double-check.

From Los Angeles Times ● Oct. 27, 2026

Luckily, Dinesh was able to double-check the list and correct Muse.

From The Wall Street Journal ● Oct. 8, 2026

"I've actually pulled off at the side of the road before a bridge just to double-check I'm the right height," he said.

From BBC ● Jul. 5, 2026

Just double-check that the spot it chooses is actually open — AI chatbots don’t always use the most up-to-date information.

From MarketWatch ● May 19, 2026

This was practically a floor roll call, as everyone opened their door to double-check that everything was fine.

From "Five Feet Apart" by Rachael Lippincott

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

But he is keenly aware of what he spends, so he double-checks all the prices.

From Seattle Times ● Dec. 20, 2022

Then she double-checks the record on the spindle.

From "All the Light We Cannot See" by Anthony Doerr

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

They double-checked that both of their names were on all accounts.

From The Wall Street Journal ● Feb. 28, 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

But I noticed he double-checked the locks on all the doors and windows of the sanctuary that night.

From "Endangered" by Eliot Schrefer

As a protector of Googoosh’s story, she recalls double-checking if the star really wanted to share some more revealing anecdotes.

From Los Angeles Times ● Dec. 2, 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

Marie is already tossing toppings from the translucent containers into the trash, counting receipts, and double-checking them on the computer.

From "Please Ignore Vera Dietz" by A.S. King

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