1
irrevocable
1
irritable
1
lasting
1
licensed(safe, unaffected, protected, resistant, invulnerable)
1
noble
1
nonemotional
1
nonreactive(adjective, dead, insensitive, insusceptible)
1
nonreturnable
1
nonreversible
1
not affected(expression, safe, unaffected, protected, resistant)
1
not liable(expression, safe, unaffected, protected, resistant)
1
not subject(expression, safe, unaffected, protected, resistant)
1
obdurate(adjective, hard, careless, cold, indifferent)
1
objective
1
obstinate
1
permanent
1
philosophic
1
repellent(adjective, resistant)
1
reverseless
1
sedate
11 years ago|4.8k views|share |citing 
APASmart Define. (2015). unsusceptible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unsusceptible/thesaurus/synonyms
ChicagoSmart Define. 2015. "unsusceptible thesaurus" https://smartdefine.org/unsusceptible/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unsusceptible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unsusceptible/thesaurus/synonyms>.
MLASmart Define. "unsusceptible thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unsusceptible/thesaurus/synonyms>