Synonyms|840Antonyms|207|Broader|7Narrower|2Related|890
13
resistant(adjective, insensitive, receptive, opposing)
9
immune(adjective, invulnerable)
6
unsusceptible(adjective, insensitive, receptive, nonresistant, well-disposed)
6
adamant
5
insusceptible
5
impervious(adjective, responsive)
5
strong
4
invulnerable
4
safe
4
unbeatable
3
all-conquering
3
impassive(adjective, cool, warm, sensitive, aloof)
3
indomitable
3
invincible
3
resisting(verb, adjective, insensitive)
3
unimpressionable
3
unresponsive(adjective, insensitive)
2
cautious
2
defendable
2
defensible
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APASmart Define. (2016). susceptible thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/susceptible/thesaurus/antonyms
ChicagoSmart Define. 2016. "susceptible thesaurus" https://smartdefine.org/susceptible/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, susceptible thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/susceptible/thesaurus/antonyms>.
MLASmart Define. "susceptible thesaurus" 23 March 2016. Web. 28 September 2026. <https://smartdefine.org/susceptible/thesaurus/antonyms>