immune

(noun) a person who is immune to a particular infection.

(adj) relating to the condition of immunity. Example: "The immune system."

(adj) secure against. Examples: "Immune from taxation as long as he resided in bermuda." "Immune from criminal prosecution."

(adj) relating to or conferring immunity (to disease or infection). Synonyms: resistant.

(adj) (usually followed by `to') not affected by a given influence. Example: "Immune to persuasion."