rapid

Synonyms and related words:

abrupt, agile, alacritous, bluff, bold, breakneck, brisk, ceaseless, chattering, chute, constant, continual, dashing, double-quick, eagle-winged, expeditious, express, fast, fleet, flying, galloping, hair-trigger, hasty, headlong, high-speed, hurried, hustling, immediate, impetuous, incessant, instant, instantaneous, light of heel, light-footed, lively, machine gun, mercurial, nimble, nimble-footed, oscillating, perennial, perpetual, plunging, precipitate, precipitous, prompt, pulsating, quick, quick as lightning, quick as thought, rapids, reckless, regular, repeated, riff, riffle, ripple, running, sault, sharp, sheer, shoot, snappy, spanking, speedy, staccato, steady, steep, stuttering, sudden, sustained, swift, unbroken, unceasing, unchanging, unintermitted, unintermittent, unintermitting, uninterrupted, unremitting, unstopped, unvarying, vertical, vibrating, winged