2
equivocal(uncertain, doubtful, dubious, suspect, shady)
2
in doubt
2
open to doubt(expression, idiom, uncertain, doubtful, dubious)
2
shaky(dubious, suspect, shady)
2
unsettled
2
unsure(adjective, dubious, suspect, shady, questionable)
2
vague
1
apocryphal
1
at issue
1
borderline(adjective, uncertain, doubtful, dubious, suspect)
1
confutable
1
contentious(doubtful, dubious, questionable, provocative, debatable)
1
debateable(adjective, contentious, provocative, debated)
1
deniable
1
dubitable
1
fishy(uncertain, doubtful, dubious, suspect, shady)
1
iffy
1
in dubio
1
indecisive
1
indefinite
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APASmart Define. (2015). open to question thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/open_to_question/thesaurus/synonyms
ChicagoSmart Define. 2015. "open to question thesaurus" https://smartdefine.org/open_to_question/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, open to question thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/open_to_question/thesaurus/synonyms>.
MLASmart Define. "open to question thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/open_to_question/thesaurus/synonyms>