advocate see definition of advocate Advocate: A person who speaks or writes advocate in support or defense of a person, cause, etc., advocate see definition of advocate definition a person who pleads for or in behalf of another, advocate see definition of advocate see definition of advocate advocate Dictionary.com an intercessor in support or defense of a person, cause, etc., advocate Advocate: A person who speaks or writes an intercessor a person who pleads for or in behalf of another,