At once

//ət ˈwʌns// adv

Definitions

Adverb
  1. 1
    In one group; together. not-comparable, obsolete

    "And they all atonce begane to make excuſe. The fyrſt ſayd vnto him: I have bought a ferme / and I muſt nedes goo and ſe it / I praye the have me excuſed."

  2. 2
    At the same time; simultaneously; together. not-comparable

    "Can you pat your head and rub your belly at once? He tried to eat four cookies at once."

  3. 3
    Immediately; now; right away. not-comparable

    "Tell the doctor to come at once. She is having a baby."

Adverb
  1. 1
    without delay or hesitation; with no time intervening wordnet
  2. 2
    simultaneously wordnet

Etymology

From at + once.

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