31
suspicious(adjective, person, uncertain, negative, nervous)
21
doubtful(adjective, person, certain, doubt, uncertain)
19
disbelieving(adjective, person, belief, uncertain, hesitant)
18
doubting(adjective, uncertain, shy, dishonest, doubtful)
17
cynical(adjective, person, attitude, uncertain, negative)
17
incredulous(adjective, belief, doubtful, wary, mistrustful)
16
unbelieving(adjective, false, belief, uncertain, negative)
14
distrustful(adjective, person, uncertain, negative, nervous)
14
dubious(adjective, certain, doubt, uncertain, nervous)
12
questioning(adjective, belief, uncertain, nervous, doubtful)
10
sceptical(adjective, unbelief doubt)
10
uncertain(adjective, certain, doubt, nervous, doubtful)
9
quizzical(adjective, doubtful, confused, wary, mistrustful)
8
pessimistic(adjective, person, attitude, shameless, negative emotions)
7
mistrustful(adjective, uncertain, nervous, doubtful, dubious)
7
sardonic(adjective, person, attitude, shameless, negative emotions)
7
unconvinced(adjective, uncertain, nervous, doubtful, unsettled)
7
unsure(adjective, certain, doubt, uncertain, nervous)
7
jealous(adjective, suspicious, wary, unenthusiastic, cynical)
6
freethinking(adjective, doubtful, leery, irreligion, disbelieving)
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APASmart Define. (2016). skeptical thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/skeptical/thesaurus/synonyms
ChicagoSmart Define. 2016. "skeptical thesaurus" https://smartdefine.org/skeptical/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, skeptical thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/skeptical/thesaurus/synonyms>.
MLASmart Define. "skeptical thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/skeptical/thesaurus/synonyms>