1
phony(extraordinary, strange, unbelievable, implausible, unthinkable)
1
poorly(adjective, inadequate, useless, inappropriate, unhealthy)
1
probable
1
problematic(adjective, open, obscure, uncertain, doubtful)
1
prodigious
1
queer(adjective, strange, crazy, fantastic, irregular)
1
reachy(extraordinary, strange, unbelievable, implausible, idealistic)
1
real
1
reluctant(uncertain, doubtful, unsure)
1
rocky(adjective, inadequate, useless, inappropriate, unhealthy)
1
skeptical(uncertain, doubtful, unsure)
1
special
1
staggering(extraordinary, strange, unbelievable, implausible, unthinkable)
1
subtle
1
supposed
1
thin(adjective, light, extraordinary, strange, exceptional)
1
touch and go(expression, idiom, uncertain, doubtful, unsure)
1
trustless(uncertain, doubtful, unsure)
1
unassured(uncertain, doubtful, unsure)
1
unattainable
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APASmart Define. (2015). unlikely thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unlikely/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlikely thesaurus" https://smartdefine.org/unlikely/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unlikely thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unlikely/thesaurus/synonyms>.
MLASmart Define. "unlikely thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unlikely/thesaurus/synonyms>