spouse (spous, spouz)
A marriage partner; a husband or wife.
tr.v. (spouz, spous) spoused, spous·ing, spous·es
To marry; wed.
[Middle English, from Old French spous, from Latin spōnsus, from past participle of spondēre, to pledge; see spend- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.