Synonyms and related words :
PDQ, apace, at once, decisively, directly, expeditiously, forthwith, immediately, in a bit, in a flash, in a jiff, in a jiffy, in a moment, in a second, in a trice, in a twink, in a twinkling, in a wink, in an instant, in nothing flat, in short order, in two shakes, instantaneously, instanter, instantly, like a shot, on the instant, on the spot, pretty damned quick, promptly, pronto, quickly, right away, right off, smartly, speedily, straightaway, straightway, subito, summarily, swiftly, tout de suite, with all speed, without delay, without further delay