a second examination or verification
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
An Americanism dating back to 1950–55
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Definitely double check with your host to make sure the listing is up to date.
From The Wall Street Journal ● Jun. 26, 2026
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
He said while the ONS had "done the right thing" to halt publication to double check the data rather than "sweeping the problem under the carpet", the "mistakes are piling up".
From BBC ● Aug. 19, 2025
"Just as well to have a double check nonetheless," Dane said.
From The Terrible Answer by Hill, Arthur G.
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
“We should double-check this one in six months on an ultrasound because of your extreme breast density and your family history,” she said.
From The Wall Street Journal ● May 4, 2026
Always double-check the latest guidance from the IRS.
From MarketWatch ● Apr. 24, 2026
Every time we'd restock some cookies or some dishwashing liquid, I would double-check to make sure it was still there, that my sweet silver babies were still safe.
From "Ghost" by Jason Reynolds
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
That’s why a music conductor I know always double-checks with himself just before he hears “maestro to the pit” and must head to the podium to conduct an opera.
From Washington Post ● Jul. 2, 2021
She relieves herself in the sixth-floor toilet and checks her instinct to flush, knowing the toilet will not refill, and double-checks the air to make sure it does not feel warm before continuing.
From "All the Light We Cannot See" by Anthony Doerr
Research shows that advisers find it more insulting to be double-checked by a chatbot than by a human rival.
From The Wall Street Journal ● Mar. 21, 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
Afterward, he double-checked the figures against Bloomberg data and found they were largely consistent.
From MarketWatch ● Dec. 5, 2025
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
“I double-checked everything,” Brian said, keeping his voice even.
From "The Chocolate War" by Robert Cormier
I finished both movies double-checking my watch in astonishment that they really were under an hour and a half.
From Los Angeles Times ● Aug. 21, 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
For him, grappling with the problem properly will involve training people to be more critical about the content they are consuming, including viewing everything with "a healthy scepticism", and double-checking sources.
From BBC ● Mar. 26, 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
I fix the blue latex gloves on my hands, double-checking that the Cal Stat is still hanging off the strap on my portable oxygen.
From "Five Feet Apart" by Rachael Lippincott
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.
