Synonyms|56Antonyms|1|Broader|0Narrower|0Related|9

30 entries under adjective topic. ×

2
impossible(unreasonable, dubious, unlikely, flimsy)
2
improbable(unreasonable, doubtful, dubious, unlikely)
1
doubtful(unreasonable, dubious, unlikely, flimsy)
1
dubious(unreasonable, doubtful, unlikely, flimsy)
1
fanciful(doubtful, unlikely, implausible)
1
far out(expression, unreasonable, dubious, unlikely)
1
farfetched(unreasonable, dubious, unlikely, flimsy)
1
fishy(unreasonable, dubious, unlikely, flimsy)
1
flimsy(unreasonable, doubtful, dubious, unlikely)
1
for the birds(expression, idiom, unreasonable, dubious)
1
full of holes(expression, idiom, unreasonable, dubious)
1
implausible(doubtful, dubious, unlikely, unbelievable)
1
inconceivable(unreasonable, doubtful, dubious, unlikely)
1
incredible(unreasonable, doubtful, dubious, unlikely)
1
obscure(unreasonable, dubious, unlikely, flimsy)
1
problematic(unreasonable, dubious, unlikely, flimsy)
1
puzzling(unreasonable, dubious, unlikely, flimsy)
1
rare(doubtful, dubious, unlikely, implausible)
1
suspect(unreasonable, dubious, unlikely, flimsy)
1
thin(unreasonable, dubious, unlikely, flimsy)
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APASmart Define. (2015). not likely thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/not_likely/thesaurus/synonyms
ChicagoSmart Define. 2015. "not likely thesaurus" https://smartdefine.org/not_likely/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, not likely thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/not_likely/thesaurus/synonyms>.
MLASmart Define. "not likely thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/not_likely/thesaurus/synonyms>