all at once
Idioms-
All at the same time, as in We can't get inside all at once, so please wait your turn . [Late 1300s]
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Suddenly, unexpectedly, as in All at once the sky darkened . For a synonym, see all of a sudden .
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.
A half reason is that newly traded stocks won’t hit index funds all at once.
From Barron's • Jun. 12, 2026
That’s easier than asking people to commit to something very long all at once.
From Slate • Jun. 4, 2026
SpaceX, in a somewhat unusual move, has introduced a plan to release “locked up” shares over time, rather than all at once.
From MarketWatch • Jun. 3, 2026
But in this system, researchers believe the star may have produced its planets sequentially rather than all at once.
From Science Daily • May 21, 2026
Slowly, and then all at once, the lab fills up with the sounds of human footsteps and human voices.
From "A Rover's Story" by Jasmine Warga
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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.