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.
He suggested airline passengers double check with their airline to make sure their reservation is intact.
From MarketWatch • Apr. 28, 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
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
"We come down about twice a week, just to double check on them, and to make sure the water is running right."
From BBC • Aug. 11, 2025
Instead of this double check upon the King there might conceivably have been more than two, or there might, as originally was the case, have been only one.
From The Spirit of American Government A Study Of The Constitution: Its Origin, Influence And Relation To Democracy by Smith, J. Allen (James Allen)
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.
