at once
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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.
Immediately, as in Mother told the children to come inside at once. [First half of 1500s]
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CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
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Question 1 of 7
Which sentence is correct?
Words nearby at once
atomy, Aton, atonal, atonalism, atonality, at once, atone, at one blow, at one fell swoop, atonement, at one's
The American Heritage® Idioms Dictionary
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