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

35 entries under doubtful topic. ×

2
improbable(adjective, unreasonable, dubious, unlikely)
1
dubious(adjective, unreasonable, unlikely, flimsy)
1
fanciful(adjective, unlikely, implausible)
1
far-fetched(unlikely, unbelievable, implausible, improbable)
1
flimsy(adjective, unreasonable, dubious, unlikely)
1
hundred-to-one(unlikely, implausible)
1
iffy(unlikely, implausible)
1
implausible(adjective, dubious, unlikely, unbelievable)
1
inconceivable(adjective, unreasonable, dubious, unlikely)
1
incredible(adjective, unreasonable, dubious, unlikely)
1
not expected(expression, unlikely, implausible)
1
questionable(dubious, unlikely, unbelievable, implausible)
1
rare(adjective, dubious, unlikely, implausible)
1
slim(unlikely, implausible)
1
slim and none(expression, idiom, unlikely, implausible)
1
unbelievable(adjective, unreasonable, dubious, unlikely)
1
uncertain(unlikely, implausible)
1
unconvincing(adjective, unreasonable, dubious, unlikely)
1
unimaginable(dubious, unlikely, implausible, improbable)
1
unsubstantial(adjective, unreasonable, dubious, unlikely)
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APASmart Define. (2015). not likely thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/not_likely/thesaurus/synonyms
ChicagoSmart Define. 2015. "not likely thesaurus" https://smartdefine.org/not_likely/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, not likely thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/not_likely/thesaurus/synonyms>.
MLASmart Define. "not likely thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/not_likely/thesaurus/synonyms>