63 entries under poor topic. ×

1
slim(adjective, thin, inadequate, doubtful)
1
trivial(implausible, unconvincing)
1
unpersuasive(weak, implausible, unconvincing)
1
unsatisfactory(adjective, thin, false, small)
0
assailable(implausible, unconvincing)
0
baseless(implausible, unconvincing)
0
controvertible(implausible, unconvincing)
0
fallacious(implausible, unconvincing)
0
false(imaginary, illusory, implausible, unconvincing)
0
faulty(adjective, thin, small, inadequate)
0
flabby(adjective, thin, small, inadequate)
0
frivolous(implausible, unconvincing)
0
green(adjective, thin, small, inadequate)
0
groundless(implausible, unconvincing)
0
handicapped(adjective, thin, small, inadequate)
0
hollow(adjective, thin, small, inadequate)
0
immature(adjective, thin, small, inadequate)
0
impotent(adjective, inadequate, ineffective, ineffectual)
0
inane(implausible, unconvincing)
0
incompetent(adjective, inadequate, ineffective, ineffectual)
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APASmart Define. (2016). unbelievable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unbelievable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unbelievable thesaurus" https://smartdefine.org/unbelievable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unbelievable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unbelievable/thesaurus/synonyms>.
MLASmart Define. "unbelievable thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/unbelievable/thesaurus/synonyms>