disturber

/dɪˈstɜrbər/
noun
  1. A person or thing that interrupts or causes trouble, especially by breaking peace or order.
    • He was known as a disturber of the peace at school.
    • The security guard removed the disturber from the theater.
    • A loud motorcycle can be a disturber of the neighborhood's quiet.
Antonyms
What does "disturber" mean? | whatsthatwordmean | whatsthatwordmean