All At Once

[adv] without warning; "all at once, he started shouting"
[adv] all at the same time; "Let's say `Yes!' all at once"

Synonyms

all of a sudden, all together

Related Terms

abruptly, all together, at a blow, at a stroke, at once, at one blow, at one jump, at one stroke, at one swoop, at one time, bang, collectively, communally, conjointly, corporately, dash, en masse, ensemble, forthwith, hastily, impetuously, impulsively, i