- rapidity
- n1. swiftness, fleetness, fastness, speed, quickness; dispatch, huriedness, expedition, expedi-tiousness; velocity, acceleration, celerity; instanta-neousness, immediateness, urgency, promptness, promptitude; abruptness, suddenness, precipitation; alacrity, agility, nimbleness, briskness, smartness, liveliness, tall stepping.2. hurry, rush, hustle, bustle, dash, scurry, flurry; haste, helter-skelter, pell-mell, hurry-scurry; run, sprint, gallop, canter, tantivy; clip, spurt; scramble, scuttle, scamper; flight, flying, race.
A Note on the Style of the synonym finder. 2014.