Synonyms|451Antonyms|268|Broader|4Narrower|8Related|1.1k

59 entries under improbable topic. ×

3
strange(adjective, light, thin, extraordinary, superb)
3
unreasonable(adjective, unusual, ridiculous, absurd, unbelievable)
2
obscure(shaky, unknown, unfamiliar, unbelievable, unpromising)
2
unreal(adjective, fantastic, imaginary, unbelievable, idealistic)
2
unworkable(adjective, idealistic)
2
weak(extraordinary, strange, doubtful, unbelievable, implausible)
1
far out(verb, expression, phrasal verb, unbelievable)
1
idealistic
1
not likely(expression, adjective, idiom, doubtful, dubious)
1
outside chance(expression, adjective, doubtful, dubious, implausible)
1
problematic(adjective, open, obscure, uncertain, doubtful)
1
reachy(extraordinary, strange, unbelievable, implausible, idealistic)
1
thin(adjective, light, extraordinary, strange, exceptional)
1
unsubstantial(extraordinary, strange, doubtful, unbelievable, implausible)
1
untoward(adjective, doubtful, dubious)
0
blue sky(expression, adjective, fantastic, imaginary, unbelievable)
0
contrary(adjective, doubtful, dubious)
0
floating(adjective, fantastic, imaginary, unbelievable, idealistic)
0
for the birds(expression, idiom, unbelievable)
0
full of holes(expression, idiom, unbelievable)
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APASmart Define. (2015). unlikely thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unlikely/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlikely thesaurus" https://smartdefine.org/unlikely/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unlikely thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unlikely/thesaurus/synonyms>.
MLASmart Define. "unlikely thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unlikely/thesaurus/synonyms>