Synonyms|610Antonyms|75|Broader|7Narrower|7Related|424

48 entries under dubious topic. ×

3
fishy(adjective, great, extraordinary, unreasonable, fantastic)
2
doubtable(adjective, thin, doubtful, suspicious)
2
farfetched(hard, difficult, unreasonable, unlikely)
2
odd(adjective, strange, crazy, doubtful, fantasy)
2
problematic(adjective, unreasonable, doubtful, suspicious)
2
rare(adjective, obscure, extraordinary, strange, doubtful)
2
remote(adjective, doubtful, improbable)
2
slight(adjective, flat, poor, thin, inadequate)
2
too much(expression, adjective, thin, informal, unreasonable)
2
unreasonable(adjective, hard, poor, difficult, thin)
1
for the birds(expression, adjective, idiom, extraordinary, unreasonable)
1
full of holes(expression, adjective, idiom, extraordinary, unreasonable)
1
not likely(expression, unreasonable, doubtful, flimsy)
1
outside chance(expression, doubtful, unlikely, implausible)
1
reachy(extraordinary, strange, unreasonable, unlikely)
1
shaky(adjective, thin, doubtful, suspicious)
0
contrary(doubtful, improbable)
0
faint(doubtful, improbable)
0
far out(expression, unreasonable, unlikely, flimsy)
0
not probable(expression, doubtful, improbable)
For more, visit Unbelievable on Power Thesaurus
10 years ago|15k views|share |citing 
APASmart Define. (2016). unbelievable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unbelievable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbelievable thesaurus" https://smartdefine.org/unbelievable/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unbelievable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unbelievable/thesaurus/synonyms>.
MLASmart Define. "unbelievable thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/unbelievable/thesaurus/synonyms>