7
weak
5
delicate(adjective, weak)
5
skinny(adjective, weak)
4
ectomorphic
4
puny
4
wimpy
3
feminine
3
endomorphic
3
powerless
3
slight(adjective, weak)
2
enervated
2
feeble
2
flabby(adjective, weak)
2
frail
2
infirm(adjective, weak)
2
small(adjective, weak)
2
weakened
1
debilitated
1
dilute
1
effete
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APASmart Define. (2016). muscular thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/muscular/thesaurus/antonyms
ChicagoSmart Define. 2016. "muscular thesaurus" https://smartdefine.org/muscular/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, muscular thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/muscular/thesaurus/antonyms>.
MLASmart Define. "muscular thesaurus" 7 January 2016. Web. 26 September 2026. <https://smartdefine.org/muscular/thesaurus/antonyms>