provoker

/prəˈvoʊkər/
noun
  1. A person or thing that causes a reaction or deliberately annoys someone.
    • That loud noise is a known provoker of headaches.
    • He was seen as a provoker of change in the company.
    • The provoker in the group always started arguments for fun.
Antonyms
What does "provoker" mean? | whatsthatwordmean | whatsthatwordmean