adj

• (usually with "from") Exempt; not subject to.
  "As a diplomat, you are immune from prosecution."
• (medicine, usually with "to") Protected by inoculation, or due to innate resistance to pathogens.
  "I am immune to chicken pox."
• (by extension) Not vulnerable.
  "Alas, he was immune to my charms."
• (medicine) Of or pertaining to immunity.
  "immune system"

noun

• (epidemiology) A person who is not susceptible to infection by a particular disease
  "Susceptibles effectively exposed to cases become cases in the next time period; cases recovering from the infection accumulate as immunes."

verb

• (rare, transitive) To make immune.
  "In the seventies those who met me did not know / Of the vision / That immuned me from the chillings of mis-prision […]"