115 entries under adjective topic. ×

15
insusceptible(hard, resist, affect, dead)
11
insensitive(noun, hard, careless, indifferent)
9
immune(resist, safe, protected, resistant)
8
impassive(hard, careless, indifferent, cruel)
8
insensible(hard, careless, indifferent, cruel)
8
unimpressionable(hard, careless, indifferent, cruel)
6
impassible(hard, affect, dead, impassive)
6
impervious(noun, resist, unresponsive, oblivious)
6
unfeeling(noun, hard, careless, cold)
4
callous(noun, hard, indifferent, cruel)
4
heartless(hard, careless, indifferent, cruel)
4
inflexible(hard, careless, indifferent, cruel)
4
protected(safe, unaffected, resistant, invulnerable)
4
soulless(hard, careless, indifferent, cruel)
4
spiritless(hard, careless, indifferent, cruel)
4
thick-skinned(noun, hard, careless, indifferent)
3
anesthetized(dead, impassive, insensitive, insusceptible)
3
cold-blooded(hard, careless, indifferent, cruel)
3
dull
3
invulnerable(safe, unaffected, protected, resistant)
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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>