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]
Words nearby at once
How to use at once in a sentence
Once discovered, this maneuver did not endear the councilors to their constituents.
My doctor insisted that once I filed this piece I lie down on my bed and not get out.I Tried to Warn You About Sleazy Billionaire Jeffrey Epstein in 2003|Vicky Ward|January 7, 2015|DAILY BEAST
Every once in a while, they act swiftly and acknowledge the problem.
Once I began reading, I realized A Gronking to Remember was a masturbatory tribute to the New England Patriots.‘A Gronking to Remember’ Speed Read: 8 Naughtiest Bits|Emily Shire|January 7, 2015|DAILY BEAST
Where the U.S. once depended on its own forces to determine who was military material, this time the Iraqis will decide.Pentagon Insider on New Plan to Fight ISIS: ‘Of Course It’s Not Enough’|Nancy A. Youssef|January 6, 2015|DAILY BEAST
He held it, but it was without pressure; without recognizance of the delight with which he once grasped it.The Pastor's Fire-side Vol. 3 of 4|Jane Porter
When his lordship retired early, as was his custom, the other men adjourned once more to the billiard-room.
As Spain, however, has fallen from the high place she once held, her colonial system has also gone down.
Each picture bore a label, giving a true description of the once-honoured gem.
And once more, she found herself desiring to be like Janet--not only in appearance, but in soft manner and tone.Hilda Lessways|Arnold Bennett