7
chicken(adjective, weak, nervous, shy, worried)
7
fainthearted(adjective, weak, nervous, shy, worried)
7
indecisive(adjective, weak, uncertain, inferior, unstable)
7
limp
7
pliable
7
wishy-washy(adjective, quiet, weak, soft, gentle)
6
flabby(adjective, poor, inadequate, ineffective, ineffectual)
6
lily-livered(adjective, weak, shy, fearful, timid)
6
spiritless(adjective, quiet, weak, gentle, humble)
6
timorous(adjective, weak, soft, base, uncertain)
5
dastardly(weak, gutless)
5
effete
5
limber
5
uncertain(adjective, nervous, unstable, hesitant, fearful)
5
undependable(adjective, uncertain, nervous, unstable, hesitant)
5
weak-kneed(adjective, quiet, weak, gentle, humble)
5
weak-willed(adjective, cowardly, swayed)
4
changeable(adjective, irresolute)
4
faint-hearted(adjective, weak, soft, uncertain, nervous)
4
fickle(adjective, irresolute)
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APASmart Define. (2015). spineless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/spineless/thesaurus/synonyms
ChicagoSmart Define. 2015. "spineless thesaurus" https://smartdefine.org/spineless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, spineless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/spineless/thesaurus/synonyms>.
MLASmart Define. "spineless thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/spineless/thesaurus/synonyms>