4
shady(adjective, uncertain, doubtful, shaky, dubious)
4
unreliable(adjective, uncertainty, uncertain, doubtful, dubious)
3
at issue
3
borderline(adjective, open, uncertain, doubtful, dubious)
3
confutable
3
disprovable(adjective, true, real)
3
equivocal(adjective, open, uncertain, doubtful, unsettled)
3
fishy(adjective, uncertain, doubtful, shaky, dubious)
3
implausible
3
indeterminate(adjective, uncertain, doubtful, vague, dubious)
3
insecure(adjective, uncertain, shaky, unclear, unlikely)
3
knotty(adjective, tricky, sticky, challenging)
3
mootable(adjective, certain, uncertain, doubtful, dubious)
3
polemic
3
polemical
3
suppositional
3
theoretical
3
touch-and-go(uncertain, shaky, unclear, unlikely, questionable)
3
unconvinced(adjective, uncertain, doubtful, unsure)
3
unlikely(adjective, uncertain, doubtful, shaky, unsure)
11 years ago|15k views|share |citing 
APASmart Define. (2015). debatable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/debatable/thesaurus/synonyms
ChicagoSmart Define. 2015. "debatable thesaurus" https://smartdefine.org/debatable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, debatable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/debatable/thesaurus/synonyms>.
MLASmart Define. "debatable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/debatable/thesaurus/synonyms>