49 entries under dubious topic. ×

3
disputable(uncertain, doubtful, suspect, shady)
3
suspicious(adjective, uncertain, doubtful, suspect)
2
debatable(uncertain, doubtful, suspect, shady)
2
doubtful(extraordinary, uncertain, suspect, astonishing)
2
open to question(expression, idiom, uncertain, doubtful)
2
problematic(uncertain, doubtful, suspect, shady)
2
questionable(extraordinary, uncertain, amazing, doubtful)
2
suspect(extraordinary, uncertain, amazing, doubtful)
2
thick(extraordinary, amazing, astonishing, incredible)
1
astonishing(extraordinary, amazing, incredible)
1
cockamamie(extraordinary, amazing, astonishing, incredible)
1
cockeyed(extraordinary, amazing, astonishing, incredible)
1
equivocal(uncertain, doubtful, suspect, shady)
1
fishy(extraordinary, uncertain, doubtful, suspect)
1
flaky(extraordinary, amazing, astonishing, incredible)
1
for the birds(expression, idiom, extraordinary, amazing)
1
full of holes(expression, idiom, extraordinary, amazing)
1
harebrained(extraordinary, amazing, astonishing, incredible)
1
incogitable(extraordinary, amazing, astonishing, incredible)
1
kooky(extraordinary, amazing, astonishing, incredible)
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APASmart Define. (2015). open to doubt thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/open_to_doubt/thesaurus/synonyms
ChicagoSmart Define. 2015. "open to doubt thesaurus" https://smartdefine.org/open_to_doubt/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, open to doubt thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/open_to_doubt/thesaurus/synonyms>.
MLASmart Define. "open to doubt thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/open_to_doubt/thesaurus/synonyms>