Insusceptible \In`sus*cep`ti*ble\, a. [Pref. in- not +
susceptible: cf. F. insusceptible.]
Not susceptible; not capable of being moved, affected, or
impressed; that can not feel, receive, or admit; as, a limb
insusceptible of pain; a heart insusceptible of pity; a mind
insusceptible to flattery; new strains of bacteria
insusceptible to penicillin. -- {In`sus*cep`ti*bly} adv.
[1913 Webster]