Synonyms of instantly

Adverb

1. immediately, instantly, straightaway, straight off, directly, now, right away, at once, forthwith, like a shot

usage: 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!"

2. instantaneously, outright, instantly, in a flash

usage: without any delay; "he was killed outright"

Definition and meaning of instantly (Dictionary)