at once
immediately, right now; all at once, all together, at the same time
at once
Adverb
1. without delay or hesitation; with no time intervening; "he answered immediately"; "found an answer straightaway"; "an official accused of dishonesty should be suspended forthwith"; "Come here now!"
(synonym) immediately, instantly, straightaway, straight off, directly, now, right away, forthwith, in real time, like a shot
2. simultaneously; "he took three cookies at a time"
(synonym) at a time, at one time
at once
at the same time, simultaneously You can't do two things at once. You can eat or talk, but not both.
at once
Synonyms and related words:
PDQ, all at once, all together, amain, apace, as one, at a blow, at a stroke, at one blow, at one jump, at one stroke, at one swoop, at one time, by forced marches, coincidentally, coinstantaneously, concurrently, conjointly, corporately, cursorily, decisively, directly, expeditiously, feverishly, forthwith, furiously, hand over fist, hastily, helter-skelter, hotfoot, hurriedly, hurry-scurry, immediately, in a hurry, in agreement, in common, in concord, in no time, in partnership, in passing, in unison, inharmony, instanter, instantly, jointly, mutually, now, on the instant, on the run, on the spot, pell-mell, per saltum, pretty damned quick, promptly, pronto, quickly, right away, right now, right off, simultaneously, slapdash, smartly, speedily, straightaway, straightway, subito, summarily, superficially, swiftly, then and there, this minute, this very minute, together, uno saltu, with a rush, with all haste, with all speed, with dispatch, with haste, without delay, without further delay
Source: Moby Thesaurus, which is part of the
Moby Project created by Grady Ward. In 1996 Grady Ward placed this thesaurus in the public domain.
AT ONCE
SUBITO. IMMEDIATAMENTE. A UN TEMPO