Synonyms of rebel

2 Syllables
sceptic, rioters, fussed, freaker, badass, hothead, traitors, ruiner, fussing, traitor, swingers, swinger, heckler, turncoat, hecklers
3 Syllables
treasonist, terrorist, mutinied, dissenters, inciter, reformers, disobeying, mutinous, disrupter, insurgent, racketing, enemies, disobeyed, disrupters, firebrand, backsliders, forsaker, protester, dogmatist, liberals, intriguers, defected, backslider, intriguer, dissenter, leftwinger, protesting, enemy, seditious, left-winger, asperser, protesters, fomenter, nihilist, protested, anarchist, reformer, disobey, rebellious
4 Syllables
agitators, abandoner, misbeliever, renegade, separatist, demagogue, secessionist, nonconformist, iconoclast, agitator
5 Syllables
untraditional
6 Syllables
revolutionaries, insurrectionary, insubordinate, revolutionary