in less than to no time

1 短暂得令人吃惊

in less next to no time in no time

2 一会儿

easily awhile now-now while minute tick jiffy for the meanwhile in less next to no time in no time half a minute half a second

3 马上

p.d.q. right yet soon immediately shortly instantly promptly momentarily forthwith sharpish pronto in a couple of shakes in two shakes without a second thought at any minute now in less next to no time on the nail right now at once right away right off anytime soon in no time any minute right off the bat this minute straight away any minute now at any minute

4 立刻

immediate instant instantaneous directly shortly instantly forthwith now-now at a single glance in a couple of shakes in two shakes in less next to no time on the nail in no time at a glance this minute like a shot