rapidly

adv

1. quickly, speedily, swiftly, hurriedly; promptly, instantly, expeditiously, straightway, Sl. pronto, in a wink, in an instant, in a jiffy, in a trice, in a flash, double-quick, Inf. like greased lightning, like a shot, like a house afire, like blazes, like a thunderbolt, Sl. like mad, Sl. like a bat out of hell; directly, at once, without delay, in less than no time, before one can say "Jack Robinson," before the ink is dry, Sl. P.D.Q., Inf. lickety-split; fast, full tilt, full pelt, full gallop, tantivy, by leaps and bounds, hotfoot, at full blast, in high gear, as fast as one's legs can carry one.

2. precipitately, hurriedly, headlong; abruptly, suddenly, unexpectedly; rashly, at half cock, pell-mell, harum-scarum, helter-skelter, head over heels.