Synonyms to mouthpiece

adviser, Dutch uncle, Polonius, admonisher, announcer, annunciator, authority, backseat driver, buttinsky, channel, cicerone, communicant, communicator, confidant, confidante, consultant, counsel, counselor, enlightener, expert, expert witness, gossipmonger, grapevine, guide, informant, information center, information medium, informer, instructor, interviewee, kibitzer, meddler, mentor, monitor, nestor, newsmonger, notifier, orienter, preceptist, press, public relations officer, publisher, radio, reporter, source, spokesman, teacher, television, teller, tipster, tout, witness, advocate, Maecenas, abet, abettor, acquaintance, admirer, advance, advise, aficionado, agent, aid and abet, allege in support, alpenstock, alter ego, alternate, amicus curiae, angel, answer, apologete, apologist, apologizer, argue for, arm, assert, athletic supporter, attorney, attorney-at-law, back, backbone, backer, backing, backstop, backup, backup man, bandeau, barrister, barrister-at-law, bearer, best friend, blandish, boost, bosom friend, bra, brace, bracer, bracket, brassiere, brief, brother, buff, buttress, cajole, call