Synonyms of nihilist

2 Syllables
rebel, skeptic, rebels, cynic
3 Syllables
reformers, insurgent, profaner, leftwinger, subverter, left-winger, anarchist, reformer, radical
4 Syllables
unbeliever, disbelievers, disbeliever, unbelievers, disectarian, secessionist, materialist, rationalist, overthrower, seditionist
5 Syllables
experientialist, insurrectionist
6 Syllables
insurrectionary, revolutionary