25 entries under feeble topic. ×

11
lazy(adjective, dull, weak)
10
weak(adjective, dull)
7
inactive(adjective, dull, weak)
7
lethargic(adjective, dull, weak)
6
enervated(verb, adjective, dull, weak)
6
impotent(adjective, dull, weak)
6
sluggish(adjective, dull, weak)
4
delicate(adjective, dull, weak)
4
infirm(adjective, dull, weak)
4
mild(adjective, dull, weak)
4
apathetic(adjective, dull, weak)
3
idle(adjective, dull, weak)
2
dull(adjective, weak)
2
soft(adjective, dull, weak)
1
fragile(adjective, dull, weak)
1
helpless(adjective, dull, weak)
1
incapable(adjective, dull, weak)
1
indifferent(adjective, dull, weak)
1
ineffective(adjective, dull, weak)
1
unhealthy(adjective, dull, weak)
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APASmart Define. (2016). vigorous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/vigorous/thesaurus/antonyms
ChicagoSmart Define. 2016. "vigorous thesaurus" https://smartdefine.org/vigorous/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, vigorous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/vigorous/thesaurus/antonyms>.
MLASmart Define. "vigorous thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/vigorous/thesaurus/antonyms>