22
feeble(adjective, strong, weak, weakness, thin)
16
weak(adjective, strong, disease, weakness, thin)
13
infirm(adjective, strong, weak, thin, delicate)
12
feebly(adverb, badly, poorly, carelessly, faintly)
12
puny(adjective, strong, weak, thin, delicate)
11
sickly(adjective, adverb, weak, thin, delicate)
9
decrepit(adjective, strong, weak, disease, thin)
9
sapless(adjective, weak, weakness, thin, delicate)
8
fragile(adjective, strong, weak, thin, delicate)
8
flimsy(adjective, strong, weak, poor, delicate)
8
frail(adjective, strong, weak, thin, delicate)
8
infirmly(adverb, irresolutely, feebly)
8
insubstantial(adjective, strong, weak, thin, delicate)
7
faintly(adverb, feebly)
7
frailly(adverb, feebly)
7
slightly
7
softly(adverb, feebly)
6
powerlessly(adverb, feebly, impotently)
6
debile(adjective, weakness)
6
faint(adjective, weak, thin, delicate, uncertain)
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APASmart Define. (2015). weakly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/weakly/thesaurus/synonyms
ChicagoSmart Define. 2015. "weakly thesaurus" https://smartdefine.org/weakly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, weakly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/weakly/thesaurus/synonyms>.
MLASmart Define. "weakly thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/weakly/thesaurus/synonyms>