- n.: swiftness, fast, speedy, quickness or swiftness, readiness to act, quality of being prompt, rapid; swift; quick; fast, spread [run] like wildfire, like a streak (of lightning), with speed, in speed, in short order, velocity, speediness, speed, rapidness, rapidity, quickness, promptness, promptitude, prompting, fastness, expeditiousness, expedition, celerity
- adj.: rapid
- adv.: quickly
- vi.: burgeon
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