31 entries under noun topic. ×

9
cynic(radical, revolutionary, critic, detractor)
9
atheist(adjective, person, view, disbelieve)
8
doubter
7
unbeliever(radical, revolutionary, critic, detractor)
6
agnostic
5
dissenter(radical, revolutionary, detractor, subversive)
5
heathen
5
questioner(radical, revolutionary, critic, detractor)
4
denier
4
doubting Thomas
4
skeptic
3
disbeliever
3
infidel
3
nullifidian
3
pagan
2
heretic(adjective, radical, revolutionary, detractor)
2
naysayer
1
defeatist
1
disdainer
1
freethinker
<12>
10 years ago|1.4k views|share |citing 
APASmart Define. (2016). sceptic thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/sceptic/thesaurus/synonyms
ChicagoSmart Define. 2016. "sceptic thesaurus" https://smartdefine.org/sceptic/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, sceptic thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/sceptic/thesaurus/synonyms>.
MLASmart Define. "sceptic thesaurus" 20 February 2016. Web. 29 September 2026. <https://smartdefine.org/sceptic/thesaurus/synonyms>