The Oxford Thesaurus An A-Z Dictionary of Synonyms - advocatev.

1) support, champion, back, endorse, uphold, recommend, stand behind, second, favour, speak or plead or argue for or in favour of: Don't you advocate the policies of the Party? --n. 2) supporter, champion, backer, upholder, second, exponent, proponent, patron, defender, apologist: She is an enthusiastic advocate of free speech. 3) lawyer, counsel; intercessor; Brit barrister, solicitor, US attorney, counselor-at-law: The advocate for the opposition is not in court.