rapidly
adverb
[ ˈrapɪdli ]
• very quickly; at a great rate.
• "the business is expanding rapidly"
Similar:
quickly,
fast,
swiftly,
speedily,
at (full) speed,
at the speed of light,
post-haste,
hotfoot,
at full tilt,
at a gallop,
expeditiously,
briskly,
promptly,
hurriedly,
in a hurry,
fast and furious,
hastily,
in haste,
in a rush,
precipitately,
abruptly,
like a shot,
double quick,
p.d.q. (pretty damn quick),
in a flash,
hell for leather,
at warp speed,
pronto,
at the double,
like a bat out of hell,
like (greased) lightning,
like a madman/madwoman,
like mad,
like crazy,
like blazes,
like a streak,
like the wind,
like a bomb,
like nobody's business,
like a scalded cat,
like the deuce,
a mile a minute,
before one can say knife,
like the clappers,
at a rate of knots,
like billy-o,
lickety-split,
apace,