insusceptible
Resistant to influence
Insusceptible means not liable to be affected by something—resistant or immune.
A person insusceptible to flattery remains unmoved by it.
The word is formal and somewhat rare, typically followed by "to" or "of": insusceptible to disease, insusceptible of proof.
The more common susceptible takes the negative prefix.
Protected from harm
- resistantWithstanding external forces
- imperviousUnable to be affected
- protectedKept from harm
- invulnerableImmune to all harm
unaffected · refractory · proof · tolerant · hardened · inoculated · vaccinated · immunized
Not stirred physically/emotionally
- indifferentLacking interest or concern
- unaffectedNot changed or influenced
- stoicUncomplaining endurer of hardship
- impassiveWithout visible emotion
detached · unresponsive · impervious · cold · numb · hardened · thick-skinned · unfeeling
Impossible to morally compromise
- unbribableCannot be bought
- unswayableCannot be persuaded
- unyieldingRefusing to give way
- steadfastFirmly loyal, unshakeable
resolute · firm · unwavering · immovable · stubborn · obstinate · inflexible · unpersuadable
immune
Protected from harm
- resistantWithstanding external forces
- imperviousUnable to be affected
- protectedKept from harm
invulnerable · unaffected · refractory · proof · tolerant · hardened · inoculated · vaccinated · immunized · shielded
unmoved
Not stirred physically/emotionally
- indifferentLacking interest or concern
- unaffectedNot changed or influenced
- stoicUncomplaining endurer of hardship
impassive · detached · unresponsive · impervious · cold · numb · hardened · thick-skinned · unfeeling · apathetic
incorruptible
Impossible to morally compromise
- unbribableCannot be bought
- unswayableCannot be persuaded
- unyieldingRefusing to give way
steadfast · resolute · firm · unwavering · immovable · stubborn · obstinate · inflexible · unpersuadable · impervious
insusceptiblesusceptible
Easily influenced or harmed
vulnerable · prone · susceptive · liable · subject to
insusceptibleimpressionable
Easily influenced or affected
sensitive · receptive · suggestible · responsive · malleable