Synonyms and related words :
agent provocateur, agitator, agitprop, catalyst, debate, debater, declaim, declaimer, elocute, exciter, firebrand, fomenter, harangue, haranguer, hold forth, hothead, incendiary, inciter, inflamer, instigator, jawsmith, mischief-maker, mouth, orate, out-herod Herod, panelist, perorate, provocateur, provoker, public speaker, rabble-rouse, rabble-rouser, rant, ranter, read, recite, ringleader, rodomontade, rouser, seditionary, seditionist, speaker, speecher, speechifier, speechmaker, spiel, spieler, spokesman, spokeswoman, spout, spouter, talker, troublemaker, tub-thump, tub-thumper, urger,