Synonyms|352Antonyms|121|Broader|4Narrower|7Related|1.4k

244 entries under adjective topic. ×

2
faulty(poor, thin, false, small)
2
feeble
2
groundless(poor, irrational, unconvincing, unreasoned)
2
inadequate(poor, thin, false, shallow)
2
inane(poor, absurd, unconvincing)
2
ineffective(poor, inadequate, ineffectual, toothless)
2
ineffectual(poor, inadequate, ineffective, toothless)
2
marvelous(hard, amazing)
2
shaky
2
small(slight, poor, thin, inadequate)
2
specious(false, unreasonable, senseless, unpredictable)
2
strange(extraordinary, fantastic, doubtful, dubious)
2
stupid
2
too much(expression, thin, informal, extraordinary)
2
unattainable
2
unfeasible
2
unfounded
2
unobtainable
2
unreliable(true, unpredictable, fickle, variable)
2
unsatisfactory(poor, thin, false, small)
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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>