espouse

v. marry; champion a cause, support an idea or principle

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Verb
1. choose and follow; as of theories, ideas, policies, strategies or plans; "She followed the feminist movement"; "The candidate espouses Republican ideals"
(synonym) adopt, follow
(hypernym) choose, take, select, pick out
(hyponym) adhere, stick
(verb-group) comply, follow, abide by
(derivation) adoption, acceptance, acceptation, espousal
2. take in marriage
(synonym) marry, get married, wed, conjoin, hook up with, get hitched with
(hypernym) unite, unify
(hyponym) inmarry
(verb-group) marry, wed, tie, splice
3. take up the cause, ideology, practice, method, of someone and use it as one's own; "She embraced Catholocism"; "They adopted the Jewish faith"
(synonym) embrace, adopt, sweep up
(hypernym) accept
(hyponym) take up, latch on, fasten on, hook on, seize on

Czas. opowiadać się za czymś; wspierać

(v. t.)
To take to one's self with a view to maintain; to make one's own; to take up the cause of; to adopt; to embrace.
  

(v. t.)
To take as spouse; to take to wife; to marry.
  

(v. t.)
To betroth; to promise in marriage; to give as spouse.
  

(2 Sam. 3:14), to betroth. The espousal was a ceremony of betrothing, a formal agreement between the parties then coming under obligation for the purpose of marriage. Espousals are in the East frequently contracted years before the marriage is celebrated. It is referred to as figuratively illustrating the relations between God and his people (Jer. 2:2; Matt. 1:18; 2 Cor. 11:2). (See BETROTH.)