114 entries under expression topic. ×

13
in doubt(adjective, idiom, clear, certain)
11
in question(adjective, idiom, clear, obscure)
5
open to question(adjective, idiom, uncertain, dubious)
4
in dispute(adjective, idiom, inquiry)
4
not kosher(dubious, suspect, shady)
3
hard to believe(adjective, idiom, unbelief doubt)
3
open to doubt(idiom, uncertain, dubious, astonishing)
2
beyond belief(extraordinary, amazing, incredible)
2
hung up(adjective, uncertain, anxious, nervous)
2
of two minds(adjective, idiom, open, uncertain)
2
open to suspicion(idiom, unbelief doubt)
1
betwixt and between(idiom, open, uncertain, dubious)
1
biting nails(adjective, uncertain, anxious, nervous)
1
clear as dishwater(idiom, uncertain, vague, unclear)
1
come apart(confused, lost, perplexed, bewildered)
1
come unzipped(confused, lost, perplexed, bewildered)
1
fat chance(adjective, shaky, unclear, unlikely)
1
feel in bones(adjective, idiom, uncertain, anxious)
1
for the birds(idiom, extraordinary, unreasonable, dubious)
1
fouled up(confused, lost, perplexed, bewildered)
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APASmart Define. (2016). doubtful thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms
ChicagoSmart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, doubtful thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>.
MLASmart Define. "doubtful thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms>