all at once
/ˌɔːl ət ˈwʌn(t)s/adv
University
1
Unexpectedly; without warning; all of a sudden.
2
Used other than figuratively or idiomatically: All at the same time; all together.
Unexpectedly; without warning; all of a sudden.
Used other than figuratively or idiomatically: All at the same time; all together.