at once

Adv.	1.	at once - 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!" Synonyms: forthwith, immediately, in real time, instantly, like a shot, right away, straight off, straightaway, directly, now
	2.	at once - simultaneously; "he took three cookies at a time" Synonyms: at a time, at one time

at a time, at one time