at once

phrase

Synonyms of at oncenext
1
: at the same time : simultaneously
2
3
: both entry 2
at once funny and sad

Examples of at once in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Today, the conditions are different, shaped by a globalized and hyper-connected image economy where everything circulates at once and at speed. Alessia Glaviano, Vogue, 4 Sep. 2026 Particle movement depends on several moving parts at once, including energy levels, speed, spatial coordinates, and angles of travel. Aman Tripathi, Interesting Engineering, 4 Sep. 2026 By the end of Saturday night, the sanctuary had served two purposes at once. Kansas City Star, 3 Sep. 2026 Statistical risks, anecdotal anxieties What made the discussion delicate was that a parent might be both right and wrong at once. Eric Boodman, STAT, 3 Sep. 2026 See All Example Sentences for at once

Word History

First Known Use

13th century, in the meaning defined at sense 1

Time Traveler
The first known use of at once was in the 13th century

Browse Nearby Words

Cite this Entry

“At once.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/at%20once. Accessed 9 Sep. 2026.

More from Merriam-Webster on at once

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster