adv · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/ət wʌn ˈblɑːst/
Received-Pronunciation:/ət wɒn ˈblɑːst/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ət wʌn ˈblæst/
1
adv
Meaning 1
At once, at the same moment in time.
Definition source: English Wiktionary via Wiktextract
Usage: figuratively, not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adv
Meaning 2
With one firing of a cannon or firearm; especially one whose ammunition is shotgun shot or grape shot, such that the multiple pieces of shot from one firing hit multiple birds or multiple soldiers.
Definition source: English Wiktionary via Wiktextract
Usage: literally, not-comparable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
From Middle English at one blaste.
Across languages
Translations
3 source translations are retained for this English entry.
German:
auf einen Schlag
— at once, at the same moment in time
Malay:
sambil menyelam minum air
— at once, at the same moment in time
Spanish:
de un plumazo
— at once, at the same moment in time