58 entries under unlikely topic. ×

3
fishy(adjective, uncertain, doubtful, shaky, dubious)
3
improbable(adjective, uncertain, doubtful, shaky, likely)
3
shady(adjective, uncertain, doubtful, shaky, dubious)
3
weak(adjective, uncertain, nervous, doubtful, insecure)
2
flimsy(adjective, doubtful, implausible, unsubstantiated)
2
on thin ice(expression, adjective, idiom, delicate, uncertain)
2
open(adjective, uncertain, nervous, unstable, doubtful)
2
suspect(uncertain, doubtful, shaky, dubious, tricky)
1
disreputable(shaky, unpromising)
1
far-fetched(uncertain, doubtful, shaky, unsure)
1
fat chance(expression, shaky, unpromising)
1
hazy(doubtful, shaky, vague, unsure)
1
hundred-to-one(doubtful, implausible)
1
impugnable(adjective, delicate, uncertain, unstable, doubtful)
1
indistinct(doubtful, shaky, vague, unsure)
1
long shot(expression, adjective, delicate, uncertain, sensitive)
1
not expected(expression, doubtful, implausible)
1
not likely(expression, doubtful, implausible)
1
obscure(uncertain, doubtful, shaky, dubious, restricted)
1
outside chance(expression, doubtful, implausible)
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APASmart Define. (2015). iffy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/iffy/thesaurus/synonyms
ChicagoSmart Define. 2015. "iffy thesaurus" https://smartdefine.org/iffy/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, iffy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/iffy/thesaurus/synonyms>.
MLASmart Define. "iffy thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/iffy/thesaurus/synonyms>