immunity

(noun) the state of not being susceptible. Synonyms: unsusceptibility. Example: "Unsusceptibility to rust."

(noun) (medicine) the condition in which an organism can resist disease. Synonyms: resistance.

(noun) the quality of being unaffected by something. Example: "Immunity to criticism."

(noun) an act exempting someone. Synonyms: exemption, granting immunity. Example: "He was granted immunity from prosecution."