69 entries under implausible topic. ×

6
false(adjective, light, weak, slight, poor)
6
inane(adjective, slight, poor, trivial, unimportance)
6
inconceivable(adjective, light, unreasonable, rare, likely)
5
doubtful(adjective, great, extraordinary, unreasonable, amazing)
5
fallacious(adjective, poor, ineffectual, unconvincing)
5
puerile(adjective, slight, poor, trivial, unimportance)
5
rare(adjective, light, thin, exceptional, doubtful)
5
uncertain(adjective, feeble, doubtful, hesitant, sluggish)
5
unreasonable(adjective, poor, thin, dubious, unlikely)
4
baseless(adjective, poor, negative, unwarranted, untrue)
4
contemptible(adjective, poor, miserable, pitiful, desolate)
4
dubious(adjective, extraordinary, unreasonable, amazing, doubtful)
4
illogical(adjective, poor, false, unwarranted, justification)
4
inept(adjective, poor, unconvincing)
4
questionable(adjective, weak, extraordinary, doubtful, absurd)
4
slim(adjective, weak, thin, delicate, feeble)
4
unpersuasive(adjective, weak, poor, feeble)
3
unlikely(adjective, light, thin, exceptional, short)
2
assailable(adjective, poor, unconvincing)
2
controvertible(adjective, poor, unconvincing)
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APASmart Define. (2016). flimsy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/flimsy/thesaurus/synonyms
ChicagoSmart Define. 2016. "flimsy thesaurus" https://smartdefine.org/flimsy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, flimsy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/flimsy/thesaurus/synonyms>.
MLASmart Define. "flimsy thesaurus" 26 January 2016. Web. 21 September 2026. <https://smartdefine.org/flimsy/thesaurus/synonyms>