lightning

Synonyms

blistering, breakneck, breathless, brisk, dizzy, fast, fleet, fleet-footed, flying, galloping, hasty, hot, nippy, quick, rapid, rapid-fire, rattling, snappy, speedy, splitting, swift, whirlwind, zippy;

Antonyms

slow;

Near Antonyms

crawling, dallying, dawdling, dillydallying, dragging, laggard, languid, lingering, plodding, poking, poky (or pokey), slowish, sluggish, unhurried;

deliberate, leisurely, measured;

dilatory, late, tardy;

ultraslow;

Related Words

expeditious, prompt, ready;

accelerated, hastened, hurried, quickened, rushed;

breathtaking;

energetic, strenuous, strong, vigorous;

high-speed;

rush;

ultrafast, ultrarapid;