11
agnostic(noun, person, cynic, unbelieving, questioner)
10
cynic(noun, person, unbelief doubt, unbeliever, nonbeliever)
10
skeptic(noun, person, belief, detractor, unbelief doubt)
9
atheist(noun, person, view, disbelieve, cynic)
9
unbeliever(noun, person, belief, detractor, unbelief doubt)
8
questioner(noun, person, detractor, cynic, unbelieving)
8
sceptic(noun, unbeliever)
6
disbeliever(noun, verb, person, unbeliever)
5
nonbeliever(noun, person, belief, detractor, cynic)
4
doubting Thomas(noun, person, belief, detractor, cynic)
4
infidel(noun, unbeliever)
3
freethinker(noun, cynic, unbelieving, questioner, unbeliever)
2
critic(noun, opponent, enemy, attacker, censor)
2
disparager(noun, opponent, enemy, attacker, critic)
2
disputer(noun, opponent, enemy, attacker, critic)
2
blamer(noun, opponent, enemy, attacker, critic)
2
carper(noun, opponent, enemy, attacker, critic)
2
caviler(noun, opponent, enemy, attacker, critic)
2
censor(noun, opponent, enemy, attacker, critic)
2
censurer(noun, opponent, enemy, attacker, critic)
<123457>
11 years ago|2.8k views|share |citing 
APASmart Define. (2015). doubter thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubter/thesaurus/synonyms
ChicagoSmart Define. 2015. "doubter thesaurus" https://smartdefine.org/doubter/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, doubter thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubter/thesaurus/synonyms>.
MLASmart Define. "doubter thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/doubter/thesaurus/synonyms>