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

The stack determines how much power the system can deliver at once. — Atharva Gosavi, Interesting Engineering, 7 Nov. 2026

His head, aglitter with feathery scales, is small, neat, furious; his wingspan could wipe out several city blocks at once. — Stephanie Zacharek, Time, 6 Nov. 2026

An evacuation order means there is an immediate threat and people should leave at once. — City News Service, Daily News, 6 Nov. 2026

Experts recommend making small and simple changes to your eating pattern rather than trying to change everything at once. — Karen Berger, Verywell Health, 6 Nov. 2026

Word History

First Known Use

13th century, in the meaning defined at sense 1

Rhymes for at once

• bunce
• dunce