18
doubt(noun, trouble, concern, anxiety, confusion)
16
uncertainty(noun, anxiety, certain, doubt, uncertainty)
11
dubiety(noun, trouble, concern, anxiety, confusion)
11
incertitude(noun, trouble, concern, anxiety, confusion)
10
dubiousness(noun, certain, doubt, uncertainty, lack)
10
mistrust(noun, trouble, concern, anxiety, confusion)
9
suspicion(noun, trouble, concern, anxiety, confusion)
8
distrust(noun, trouble, concern, anxiety, confusion)
8
question(noun, certain, doubt, uncertainty, lack)
6
implausibility(noun, improbability, unlikelihood)
6
misgiving(noun, trouble, concern, anxiety, confusion)
6
skepticism(noun, trouble, concern, anxiety, confusion)
6
unlikelihood(noun, improbability, implausibility)
5
ambiguity(noun, trouble, cover, concern, line)
5
disbelief
5
equivocation(noun, cover, line, doubt, uncertainty)
5
improbability(noun, improbability, implausibility, unlikelihood)
5
incredulity
4
haziness(noun, uncertainty, vagueness, roughness, fuzziness)
4
indefiniteness(noun, doubt, uncertainty, obscurity, vagueness)
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APASmart Define. (2016). doubtfulness thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubtfulness/thesaurus/synonyms
ChicagoSmart Define. 2016. "doubtfulness thesaurus" https://smartdefine.org/doubtfulness/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, doubtfulness thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubtfulness/thesaurus/synonyms>.
MLASmart Define. "doubtfulness thesaurus" 29 February 2016. Web. 22 September 2026. <https://smartdefine.org/doubtfulness/thesaurus/synonyms>