English · Greetings & Phrases
at once
/æt wʌns/
[/æt wʌns/]
immediately
Intermediatephrase
Definition
Immediately, without delay. It can also mean at the same time.
Example
Come here at once!
Come here at once!
Etymology
From 'once' meaning a single instant, with 'at' marking the moment.
How & Where It’s Used
Slightly formal way to say immediately.