Synonyms of adv instantly

2 senses of instantly

Sense 1
immediately, instantly, straightaway, straight off, directly, now, right away, at once, forthwith, like a shot -- (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!")

Sense 2
instantaneously, outright, instantly, in a flash -- (without any delay; "he was killed outright")