156 entries under adjective topic. ×

4
erroneous(unpredictable, hollow, fickle, variable)
4
far-fetched(hard, extraordinary, fantastic, amazing)
4
fragile(weak, thin, delicate, shaky)
4
inadequate(weak, poor, thin, delicate)
4
ineffective(weak, poor, inadequate, feeble)
4
insubstantial(weak, flat, poor, thin)
4
preposterous(extraordinary, fantastic, amazing, unbelievable)
4
shaky(weak, thin, frail, likely)
4
slight(weak, flat, poor, thin)
3
fantastic(extraordinary, strange, unlikely, unbelievable)
3
ineffectual(weak, poor, thin, delicate)
3
marvelous
3
paltry(weak, thin, delicate, shaky)
3
thick(great, flat, poor, thin)
3
unsatisfactory(weak, poor, thin, false)
2
fishy(extraordinary, unreasonable, fantastic, amazing)
2
frail(weak, thin, delicate, shaky)
2
hard to believe(expression, idiom)
2
indecisive(weak, thin, delicate, uncertain)
2
insufficient(weak, flat, poor, thin)
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APASmart Define. (2015). unconvincing thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unconvincing/thesaurus/synonyms
ChicagoSmart Define. 2015. "unconvincing thesaurus" https://smartdefine.org/unconvincing/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unconvincing thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unconvincing/thesaurus/synonyms>.
MLASmart Define. "unconvincing thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/unconvincing/thesaurus/synonyms>