instantly

(r) 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!
at once, forthwith, immediately, like a shot, right away, straightaway, straight off, directly, now,
(r) without any delay
- he was killed outright
in a flash, instantaneously, outright,

Synonyms

at once forthwith immediately like a shot right away straightaway straight off directly now in a flash instantaneously outright

Words of close approximity