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Synonyms

at once

Idioms  
  1. At the same time, as in We can't all fit into the boat at once . [First half of 1200s] Also see at one time , def. 1.

  2. Immediately, as in Mother told the children to come inside at once . [First half of 1500s]


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.

Joseph Perkovich, arguing for Pitchford, tried to do two things at once.

From Slate • Apr. 10, 2026

Two things can be true at once: Your very real fear of flying, which can result in very real physical and psychological distress, and your husband’s window of time to take this trip.

From MarketWatch • Apr. 9, 2026

More swings, more practice and more rounds, but over time, not all at once.

From The Wall Street Journal • Apr. 6, 2026

Real radicalism is accepting the discomfort; it’s acknowledging that two or more things can coexist, and addressing all of those facets at once, even if the result isn’t perfect.

From Salon • Apr. 3, 2026

In all his life, he’d never seen a girl wear so many bright colors all at once.

From "The Way to Rio Luna" by Zoraida Cordova