flu·en·cy \ˈflüənsē, -si\noun (-es) Etymology: Late Latin fluentia action of flowing, from Latin fluent-, fluens + -ia -y 1.obsolete: abundance, profusion 2.: fluent quality : smoothness, ease, and readiness especially of utterance < spoke with great poise and fluency > sometimes: volubility < her fluency was like the insistent chatter of a stream >