ALL AT ONCE


Meaning of ALL AT ONCE in English

1.

suddenly :

All at once she lost her temper.

2.

all together; at the same time

SYN simultaneously :

I can't do everything all at once—you'll have to be patient.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.