instant Synonyms

instantaneous flash moment second split second swift sudden immediate immediately insistent jiffy speedy minute rapid quick present prompt heartbeat clamant crying twinkling wink direct trice exigent expeditious blink of an eye flashbulb flashgun photoflash today suddenly point in time arcsecond arcminute right away New York minute just then min at once straightaway minute of arc sec newsflash on the spot oven-ready polaroid precooked rapid fire real time