1
past belief(expression, extraordinary, amazing, incredible)
1
peculiar
1
phony(extraordinary, strange, amazing, unbelievable, incredible)
1
problematical
1
rare(extraordinary, strange, doubtful, dubious, unlikely)
1
reachy(adjective, extraordinary, strange, likely, unlikely)
1
scatterbrained(extraordinary, amazing, incredible)
1
screwy(extraordinary, amazing, irrational, incredible, unreasoned)
1
self-contradictory(adjective, absurd)
1
shady
1
shallow(adjective, flat, poor, thin, small)
1
slim(adjective, slight, poor, thin, inadequate)
1
speculative
1
staggering(extraordinary, strange, amazing, unbelievable, incredible)
1
staggering belief
1
supposed
1
uncertain(adjective, irregular, doubtful, unpredictable, rare)
1
uncompelling
1
unconceivable(adjective, likely)
1
unearthly
11 years ago|13k views|share |citing 
APASmart Define. (2015). implausible thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/implausible/thesaurus/synonyms
ChicagoSmart Define. 2015. "implausible thesaurus" https://smartdefine.org/implausible/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, implausible thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/implausible/thesaurus/synonyms>.
MLASmart Define. "implausible thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/implausible/thesaurus/synonyms>