a. 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.
[Latin fluēns, fluent-, present participle of fluere, to flow; see bhleu- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.