immune

Adjective

• (usually followed by `to') not affected by a given influence
  • immune to persuasion
    

• relating to or conferring immunity (to disease or infection)

• secure against
  • immune from taxation as long as he resided in Bermuda
    
  • immune from criminal prosecution
    

• relating to the condition of immunity
  • the immune system
    

Noun

• a person who is immune to a particular infection