151 entries under weak topic. ×

1
enervated(adjective, thin, delicate, uncertain)
1
enfeebled(adjective, thin, delicate, shaky)
1
etiolated(adjective, thin, delicate, shaky)
1
exhausted(adjective, thin, delicate, uncertain)
1
failing(adjective, poor, thin, delicate)
1
flabby(adjective, thin, delicate, shaky)
1
flat(thin, incompetent, frail, puny)
1
glitch(poor, insufficient, scarce)
1
helpless(adjective, thin, delicate, shaky)
1
house of cards(expression, slight, thin, feeble)
1
impotent(adjective, poor, thin, delicate)
1
in poor health(expression, idiom, false, insane)
1
inappreciable(slight, poor, small, miserable)
1
inapt(poor, insufficient, scarce)
1
incapable(poor, insufficient, scarce)
1
incommensurate(poor, insufficient, scarce)
1
incompetent(adjective, poor, low, thin)
1
indecisive(adjective, thin, delicate, shaky)
1
inefficient(adjective, thin, delicate, shaky)
1
languid(adjective, thin, delicate, uncertain)
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APASmart Define. (2016). insubstantial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/insubstantial/thesaurus/synonyms
ChicagoSmart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, insubstantial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/synonyms>.
MLASmart Define. "insubstantial thesaurus" 30 March 2016. Web. 26 September 2026. <https://smartdefine.org/insubstantial/thesaurus/synonyms>