At Once

Synonyms of at once

• immediately
• instantly
• right away

Antonyms of at once

• gradually
• slowly
• deliberately

Collocations of at once

immediately

Frequency: 80 %

He left the room immediately after the meeting.

simultaneously

Frequency: 70 %

The dancers moved in sync, performing their routine simultaneously.

instantly

Frequency: 65 %

The email was sent instantly with just a click of a button.

all at once

Frequency: 60 %

The lights went out all at once, plunging the room into darkness.

concurrently

Frequency: 50 %

The two events were scheduled to happen concurrently, making it difficult to attend both.

Idiomatic Expressions for at once

• Phrase: at once
  Meaning: both together or all at the same time
  Usage: She was both nervous and excited at once when she received the job offer.