interferer

/ˌɪntərˈfɪrər/
noun
  1. A person or thing that interferes, especially by intruding or causing disruption.
    • The new security system blocks any interferer trying to jam the signal.
    • In the meeting, the manager told the constant interferer to let others finish speaking.
    • The loud music from the party next door was an unwelcome interferer with my studying.
Antonyms