5
flimsy(adjective, weak, poor, feeble, implausible)
5
unconvincing(adjective, weak, poor, feeble, implausible)
4
lame(adjective, weak, poor, feeble, implausible)
4
thin(adjective, weak, feeble, deficient)
3
feeble(adjective, weak)
3
inconclusive(adjective, weak)
3
ineffective(adjective, weak, feeble)
3
weak(adjective, feeble)
2
implausible(adjective, weak, poor, unconvincing)
2
unimpressive(adjective, weak)
2
unsuccessful(adjective, weak)
2
vain(adjective, weak)
1
ambiguous
1
delicate
1
doubtful
1
empty
1
faint
1
fragile
1
fruitless
1
futile
13 years ago|3.1k views|share |citing 
APASmart Define. (2013). unpersuasive thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unpersuasive/thesaurus/synonyms
ChicagoSmart Define. 2013. "unpersuasive thesaurus" https://smartdefine.org/unpersuasive/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, unpersuasive thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unpersuasive/thesaurus/synonyms>.
MLASmart Define. "unpersuasive thesaurus" 28 June 2013. Web. 20 September 2026. <https://smartdefine.org/unpersuasive/thesaurus/synonyms>