perturber

/pərˈtɜrbər/
noun
  1. A person or thing that causes disturbance, worry, or disruption.
    • The new student was a known perturber, always interrupting the class.
    • The scientist studied the perturber that was affecting the planet's orbit.
    • In the quiet village, the construction noise was a constant perturber of peace.
Antonyms
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