snappily (adverb) on the double: very quickly
Sinonime: chop chop, chop-chop, double-time, expeditiously,
fast, flat-out, fleetly, full tilt,
hastily,
hurried, hurriedly, in a flash, in double time, in haste, in high gear, lickety-split, lickety-split, like a shot, like greased lightning, like wildfire,
promptly, pronto,
quick,
quickly,
rapidly, snappily, speedily,
swift,
swiftly