132 entries under doubtful topic. ×

1
hundred-to-one(unlikely, implausible)
1
impugnable(adjective, delicate, uncertain, unstable)
1
in a quandary(expression, adjective, idiom, uncertain, nervous)
1
inconstant(adjective, uncertain, irregular, vague)
1
indefinite(open, uncertain, unsettled, dubious)
1
indistinct(shaky, vague, unsure, unlikely)
1
irregular(adjective, unusual, uncertain, unstable)
1
irresolute(open, uncertain, nervous, vague)
1
lacking(adjective, uncertain, nervous, shaky)
1
loaded(adjective, delicate, uncertain, unstable)
1
mistrustful(adjective, uncertain, nervous, shaky)
1
mootable(uncertain, dubious, unsure, questionable)
1
not expected(expression, unlikely, implausible)
1
not likely(expression, unlikely, implausible)
1
obscure(uncertain, shaky, dubious, restricted)
1
out on a limb(expression, idiom, delicate, uncertain)
1
outside chance(expression, unlikely, implausible)
1
rootless(adjective, uncertain, nervous, shaky)
1
rugged(adjective, delicate, uncertain, unstable)
1
skeptical(adjective, uncertain, nervous, hesitant)
11 years ago|5.7k views|share |citing 
APASmart Define. (2015). iffy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/iffy/thesaurus/synonyms
ChicagoSmart Define. 2015. "iffy thesaurus" https://smartdefine.org/iffy/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, iffy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/iffy/thesaurus/synonyms>.
MLASmart Define. "iffy thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/iffy/thesaurus/synonyms>