(n.) The quality of being nimble; lightness and quickness in motion; agility; swiftness.

acuity acuteness adroitness agility alacrity alertness aptitude aptness attention attentiveness braininess brightness brilliance briskness clear thinking cleverness dexterity dispatch esprit expedition expeditiousness featliness flair genius giftedness gifts keen-wittedness keenness lightness mental alertness mercurial mind native cleverness nimble mind nimble-wittedness nous promptitude promptness punctuality quick parts quick thinking quick wit quick-wittedness quickness readiness ready wit savvy sharp-wittedness sharpness sleeplessness smartness smarts speediness sprightly wit spryness swiftness talent wakefulness