Synonyms to expert witness

adviser, Dutch uncle, Polonius, admonisher, announcer, annunciator, authority, backseat driver, buttinsky, channel, cicerone, communicant, communicator, confidant, confidante, consultant, counsel, counselor, enlightener, expert, gossipmonger, grapevine, guide, informant, information center, information medium, informer, instructor, interviewee, kibitzer, meddler, mentor, monitor, mouthpiece, nestor, newsmonger, notifier, orienter, preceptist, press, public relations officer, publisher, radio, reporter, source, spokesman, teacher, television, teller, tipster, tout, witness, AFTRA, DJ, MC, ancestor, anchor, anchor man, anchorman, antecedent, avant-garde, bellman, bellwether, broadcaster, buccinator, buccinator novi temporis, bushwhacker, commentator, crier, disk jockey, emcee, enunciator, explorer, forebear, foregoer, forerunner, foreshadower, front runner, frontiersman, fugleman, groundbreaker, harbinger, herald, informat