es·pouse 
(ĭ-spouz)
(ĭ-spouz)tr.v. es·poused, es·pous·ing, es·pous·es
1. To adhere to or advocate: espoused a contrarian viewpoint.
2.
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.]
es·pouser n.