rapid

equivalents

fast

synonyms

abrupt

agile

alacritous

bluff

bold

breakneck

brisk

ceaseless

chattering

chute

constant

continual

dalles

dashing

double-quick

eagle-winged

expeditious

express

fast

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

variants

white-water

hypernyms

waterway

etymologically-related-terms

rapt

same-contexts

fast

gradual

immediate

quick

subsequent

vigorous

rhymes

vapid