Synonyms for Espouse (same or very similar meaning)
WordNet sense 1 (take in marriage):
conjoin, marry, wed, get hitched with, get married, hook up withWordNet sense 2 (choose and follow; as of theories, ideas, policies, strategies or plans):
adopt, followWordNet sense 3 (take up the cause, ideology, practice, method, of someone and use it as one's own):
embrace, sweep upFrom the ODE community, based on WordNetadd/edit