4
flaccid
4
forceless(adjective, weak, inferior, inadequate, limited)
4
frightened(adjective, weak, soft, base, uncertain)
4
inadequate(adjective, weak, poor, inferior, limited)
4
infirm(adjective, irresolute)
4
listless
4
meek(adjective, quiet, weak, gentle, modest)
4
powerless(adjective, uncertain, inferior, unstable, inadequate)
4
shifty(adjective, irresolute)
4
shy(adjective, weak, nervous, worried, fearful)
4
tentative(adjective, nervous, shy, fearful, irresolute)
4
volatile(adjective, irresolute)
3
erratic(adjective, irresolute)
3
faint
3
flitting(adjective, irresolute)
3
frail
3
hesitant(adjective, uncertain, nervous, unstable, shy)
3
impulsive(adjective, irresolute)
3
inconsistent(adjective, irresolute)
3
irresponsible(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>