3
indecisive(adjective, cowardly)
3
infirm
3
insect(noun, nature, animal, creature, fauna)
3
irresolute(adjective, cowardly)
3
marsupial(noun, animal)
3
rodent(noun, animal)
3
ruminant(noun, animal)
3
vermin(noun, animal)
3
weak-kneed
3
weak sister(noun, expression, idiom, group)
3
weakling
2
biped
2
bird(noun, animal)
2
cannibal
2
chicken liver(expression, chicken, coward, weakling, quitter)
2
crustacean(noun, shrimp)
2
crybaby
2
doormat
2
fish(noun, animal)
2
fraidy-cat(chicken, coward, weakling, quitter, faint-of-heart)
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APASmart Define. (2015). invertebrate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/invertebrate/thesaurus/synonyms
ChicagoSmart Define. 2015. "invertebrate thesaurus" https://smartdefine.org/invertebrate/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, invertebrate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/invertebrate/thesaurus/synonyms>.
MLASmart Define. "invertebrate thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/invertebrate/thesaurus/synonyms>