tr.v. es·poused, es·pous·ing, es·pous·es
1. To adhere to or advocate: espoused a contrarian viewpoint.
a. To take in marriage; marry.
b. To give (a woman) in marriage.
[Middle English espousen, to marry, from Old French espouser, from Latin spōnsāre, frequentative of spondēre, to betroth; see spend- 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.