56 entries under unlikely topic. ×

41
dubious(noun, adjective, clear, great, rough)
38
doubtful(noun, adjective, clear, great, obscure)
35
uncertain(noun, adjective, clear, rough, honest)
27
debatable(noun, adjective, certain, uncertainty, uncertain)
21
shady(adjective, honest, unusual, strange, corrupt)
21
suspect(verb, adjective, weak, great, honest)
18
problematic(adjective, clear, open, rough, certain)
17
fishy(adjective, great, honest, informal, extraordinary)
15
disreputable(adjective, uncertain, doubtful, unsettled, shaky)
12
shaky(adjective, uncertain, doubtful, dubious, unreliable)
11
ambiguous(adjective, clear, rough, certain, uncertain)
10
incredible(adjective, great, flat, poor, extraordinary)
9
indefinite(adjective, obscure, rough, uncertain, doubtful)
9
unbelievable(adjective, weak, great, flat, poor)
8
dubitable(adjective, clear, certain, uncertain, anxious)
7
implausible(adjective, weak, great, flat, poor)
7
unclear(adjective, clear, rough, certain, uncertain)
6
doubtable(adjective, uncertain, doubtful, unsettled, shaky)
6
open(adjective, uncertain, doubtful, unsettled, shaky)
6
unconvincing(adjective, weak, great, flat, poor)
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APASmart Define. (2015). questionable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/questionable/thesaurus/synonyms
ChicagoSmart Define. 2015. "questionable thesaurus" https://smartdefine.org/questionable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, questionable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/questionable/thesaurus/synonyms>.
MLASmart Define. "questionable thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/questionable/thesaurus/synonyms>