What is the meaning of all at once?

adverb

  • All at the same time.
    • usage: "Let's say `Yes!' all at once"
  • Without warning.
    • usage: "all at once, he started shouting"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). all at once. Retrieved September 22, 2026, from http://smartdefine.org/all_at_once/definitions/1250565
ChicagoWordNet. 2010. "all at once" http://smartdefine.org/all_at_once/definitions/1250565 (accessed September 22, 2026).
HarvardWordNet 2010, all at once, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/all_at_once/definitions/1250565>.
MLAWordNet. "all at once" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/all_at_once/definitions/1250565>