Happening or done quickly, suddenly or immediately
suddenly adverb
quickly and without any warning
immediately adverb, conjunction
very quickly and without delay
at once phrase
immediately
straight away adverb
immediately
promptly adverb
immediately
on-the-spot adjective
done or happening immediately
headlong adjective
happening or done very quickly and without careful thought
right away phrase
immediately
right now phrase
immediately
straight adverb
directly and immediately
on the spur of the moment phrase
if you do something on the spur of the moment, you do it suddenly and do not take time to plan it or think carefully about it