126 entries under expression topic. ×

1
not trustworthy(adjective, unpredictable, fickle, variable)
1
off the deep end(adjective, idiom, delicate, sensitive)
1
on a hunch(idiom, doubtful, speculative)
1
on slippery ground(adjective, idiom, delicate, sensitive)
1
on the spot(idiom, delicate, unsound, dangerous)
1
open to doubt(idiom, doubtful, dubious, shady)
1
open to suspicion(idiom, unbelief doubt)
1
out of focus
1
out of order(idiom, unreliable, uneven, variable)
1
out on a limb(idiom, delicate, unstable, doubtful)
1
outside chance(doubtful, unlikely, implausible)
1
playing with fire(idiom, delicate, unsound, rugged)
1
rings untrue(dubious, suspect, shady)
1
running scared(adjective, anxious, nervous, doubtful)
1
slim and none(idiom, doubtful, unlikely, implausible)
1
touch and go(adjective, idiom, delicate, nervous)
1
under consideration(idiom, inquiry)
1
under discussion(idiom, inquiry)
1
under investigation(idiom, inquiry)
1
unheard of(doubtful, unlikely, implausible)
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APASmart Define. (2016). uncertain thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/uncertain/thesaurus/synonyms
ChicagoSmart Define. 2016. "uncertain thesaurus" https://smartdefine.org/uncertain/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, uncertain thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/uncertain/thesaurus/synonyms>.
MLASmart Define. "uncertain thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/uncertain/thesaurus/synonyms>