fi·an·cé (fē′än-sā, fē-änsā′)
A man to whom one is engaged to be married.
[French, from past participle of fiancer, to betroth, from Old French fiancier, from fiance, trust, from fier, to trust, from Vulgar Latin *fīdāre, from Latin fīdere; see bheidh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.