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.
Keep it simple instead of trying to change everything at once. Tarot.com, The Orlando Sentinel, 29 Aug. 2026 The idea sounded at once mystical, therapeutic, and nightmarish. Sebastian Smee, The Atlantic, 28 Aug. 2026 Twin nursing pillows are designed to feed two babies at once. Bestreviews, Chicago Tribune, 28 Aug. 2026 Most children are forgotten in cars when caregivers are operating on autopilot mode while juggling several responsibilities at once. Lina Ruiz, Fort Worth Star-Telegram, 27 Aug. 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

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Cite this Entry

“At once.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/at%20once. Accessed 1 Sep. 2026.

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