Adverb: forthwith ,forth'with
- Without delay or hesitation; with no time intervening
"an official accused of dishonesty should be suspended forthwith";
- immediately, instantly, straightaway, straight off, directly, now, right away, at once, like a shot [informal], right now, right off the bat [N. Amer, informal], instantaneously, outright, in a flash, tout de suite
See also: then and there