Synonyms|840Antonyms|207|Broader|7Narrower|2Related|890
2
immunised
2
immunized
2
impregnable
2
stoic
2
unlikely(adjective, insensitive)
1
counteractive
1
incapable
1
insuperable
1
protected
1
secure
1
shrewd
1
sturdy
1
unassailable
1
unconquerable
1
unpersuadable
1
unstoppable
1
unsuasible
1
vaccinated
1
vigorous
0
apathetic
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APASmart Define. (2016). susceptible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/susceptible/thesaurus/antonyms
ChicagoSmart Define. 2016. "susceptible thesaurus" https://smartdefine.org/susceptible/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, susceptible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/susceptible/thesaurus/antonyms>.
MLASmart Define. "susceptible thesaurus" 23 March 2016. Web. 29 September 2026. <https://smartdefine.org/susceptible/thesaurus/antonyms>