instantly
adv. time B2 Upper Intermediate Oxford US //ˈɪnstəntɫi// UK //ˈɪnstəntli// in·stant·ly
adv. happening right away or without any delay. You use this when something occurs at the exact same moment as something else.
adv. at once or immediately; without any intervening period of time.
The computer turns on instantly when I press the button.
The video went viral and she became famous almost instantly after posting it online.
The medication is designed to dissolve on the tongue so that it enters the bloodstream and provides relief instantly rather than waiting for digestion.
From instant + -ly.
Usage
Typically placed after the verb it modifies or at the end of the clause; can also precede the verb for emphasis.