at once

phrase

1

: at the same time : simultaneously

2

: immediately

3

: both entry 2

at once funny and sad

Examples of at once in a Sentence

Recent Examples on the Web

When, in the wake of one of these life-altering events, everything must go, an estate sale is a way to sell off a large amount of furniture, decor, and art all at once. — Zoey Goto, Architectural Digest, 7 Aug. 2026

Eaton’s research aims to go further by looking at several failures happening at once, so operators can better understand all possible risks. — Sujita Sinha, Interesting Engineering, 7 Aug. 2026

Linkin Park performs even better on the Official Rock & Metal Albums chart, where four of the band’s releases appear at once. — Hugh McIntyre, Forbes.com, 7 Aug. 2026

Where previous generations tended to stall partway, the model could carry a researcher's experiment through to the end, freeing them to run more at once. — Harry Booth, Time, 7 Aug. 2026

Word History

First Known Use

13th century, in the meaning defined at sense 1

Rhymes for at once

• bunce
• dunce