130 entries under feeble topic. ×

1
measly(weak, frail, tiny)
1
niggling(adjective, weak, frail, tiny)
1
not strong(expression, adjective, uncertain, hesitant)
1
nothing(weak, frail, tiny, measly)
1
out of gas(expression, adjective, idiom, uncertain)
1
peanut(weak, frail, tiny, measly)
1
peewee(weak, frail, tiny, measly)
1
picayune(weak, frail, tiny, measly)
1
pint-sized(weak, frail, tiny, measly)
1
prostrate(adjective, uncertain, shaky, hesitant)
1
rinkydink(weak, slight, thin, tacky)
1
runt(weak, frail, tiny, measly)
1
senile(adjective, uncertain, shaky, hesitant)
1
sensile(adjective, weak, delicate, ill, sick)
1
shallow(weak, slight, thin, tacky)
1
shrimp(weak, frail, tiny, measly)
1
sick(adjective, dull, light, weak, soft)
1
sickly(adjective, dull, light, weak, soft)
1
slapdash(weak, slight, thin, tacky)
1
slender(adjective, light, weak, slight, easy)
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APASmart Define. (2016). unsubstantial thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unsubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsubstantial thesaurus" https://smartdefine.org/unsubstantial/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unsubstantial thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unsubstantial/thesaurus/synonyms>.
MLASmart Define. "unsubstantial thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/unsubstantial/thesaurus/synonyms>