in a flash
idiom
informal
: very quickly or suddenly
I'll be back in a flash.
The idea came to me in a flash.
Examples of in a flash in a Sentence
Recent Examples on the Web
Last season, The Simpsons made headlines for killing off Marge in a flash-forward, though co-showrunner Matt Selman quickly clarified that the development wouldn't impact other episodes of the show.
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Shania Russell, Entertainment Weekly, 6 Jan. 2026
Davines’ lightweight wash delivers fullness and definition in a flash, with a soft, natural glow.
—Adam Hurly, Robb Report, 2 Jan. 2026
This ground beef casserole comes together in a flash.
—Heather Riske, Better Homes & Gardens, 23 Dec. 2025
Nickels and dimes Barron broke on the ball in a flash.
—Parker Gabriel, Denver Post, 6 Dec. 2025
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Shania Russell, Entertainment Weekly, 6 Jan. 2026
Davines’ lightweight wash delivers fullness and definition in a flash, with a soft, natural glow.
—Adam Hurly, Robb Report, 2 Jan. 2026
This ground beef casserole comes together in a flash.
—Heather Riske, Better Homes & Gardens, 23 Dec. 2025
Nickels and dimes Barron broke on the ball in a flash.
—Parker Gabriel, Denver Post, 6 Dec. 2025
See All Example Sentences for in a flash
Cite this Entry
“In a flash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/in%20a%20flash. Accessed 10 Jan. 2026.
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