1a. Able to express oneself readily and effortlessly: a fluent speaker; fluent in three languages.b. Flowing effortlessly; polished: speaks fluent Russian; gave a fluent performance of the sonata.2. Flowing or moving smoothly; graceful: a yacht with long, fluent curves.3. Flowing or capable of flowing; fluid.
ETYMOLOGY:
Latin fluns, fluent-, present participle of fluere, to flow. See bhleu- in Appendix I.