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At the same time; simultaneously; together.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
- Can you pat your head and rub your belly at once? He tried to eat four cookies at once.
Meaning relationships
Synonyms: at one time, at once
Antonyms: none provided
Immediately; now; right away.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Examples
- Tell the doctor to come at once. She is having a baby.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
In one group; together.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable, obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
without delay or hesitation; with no time intervening
Definition source: Princeton WordNet 3.0
Examples
- he answered immediately
- found an answer straightaway
- an official accused of dishonesty should be suspended forthwith
- Come here now!
Meaning relationships
Synonyms: immediately, instantly, straightaway, straight off, directly, now, right away, forthwith, like a shot
Antonyms: none provided
simultaneously
Definition source: Princeton WordNet 3.0
Examples
- he took three cookies at a time
Meaning relationships
Synonyms: at a time, at one time
Antonyms: none provided
From Middle English at ones, equivalent to at + once.