4 synonym groups for Instant

immediately, instantly, promptly, at once, right away, straightaway, without hesitation, without waiting, forthwith, directly, now, this instant, this moment, pronto, posthaste, in no time, at the drop of a hat, on the spot, in a flash, in an instant, in a jiffy, in a heartbeat, in a split second, in a trice, in short order, without further ado, without delay, without pause, without procrastination, without wasting time, with no delay, with no hesitation, with no waiting, with all speed, with dispatch, with expedition, with immediacy, with promptness, with urgency, with rapidity, with swiftness, with quickness, with alacrity, with celerity, with haste, with speed, with briskness, with rapidness [x]

quickly, instantly, immediately, promptly, swiftly, rapidly, in no time, in an instant, in a flash, in a jiffy, in a heartbeat, in a trice, in a twinkling, in a blink, in a split second, in a moment, in a second, in a wink, in a blink of an eye, in a nanosecond in a fraction of a second, in a split moment, in a snap, in a snap of the fingers, in a twinkle, in a shake, in a tick, in a beat, in a breath, in a flick, in a flicker, in a flash of light, in a split instant, in a split jiffy, in a split blink, in a split heartbeat, in a split trice, in a split twinkling, in a split wink, in a split tick, in a split beat, in a split breath, in a split flick, in a split flicker [x]

glances, peeks, glints, flashes, views, sights, looks, glimpsings, snatches, sightings, glimpses [x]

immediately, instantly, promptly, directly, at once, right away, without delay, forthwith, straight off, now, pronto, without hesitation, in no time, on the spot, at this moment, right now, without further ado, this instant, in a flash, in an instant, in a jiffy, in a heartbeat, in a split second, in a trice, in a twinkling, in no time at all, in short order, in double-quick time, in a blink, in a blink of an eye, in a snap, in a second, in a moment, in a wink, in a twinkling of an eye, in a fraction of a second, in a nanosecond, in a millisecond, in a microsecond, in a picosecond, in a femtosecond, in a zeptosecond, in a yoctosecond, in a shake, in a tick, in a beat, in a breath, in a sigh [x]