1. Expressing or characterized by warmth of feeling; passionate: an ardent lover.
2. Displaying or characterized by strong enthusiasm or devotion; fervent: "an impassioned age, so ardent and serious in its pursuit of art" (Walter Pater).
a. Burning; fiery.
b. Glowing; shining: ardent eyes.
[Middle English ardaunt, from Old French ardant, from Latin ārdēns, ārdent-, present participle of ārdēre, to burn; see as- in the Appendix of Indo-European roots.]
arden·cy (-dn-sē) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.