perturb

Etymology

From Middle English perturben, from Old French perturber, from Latin perturbare (“throw into confusion, confuse, disorder, disturb”), from per (“through”) + turbare (“to confuse, disturb”).

verb

  1. To disturb; to bother or unsettle.
  2. (physics) To slightly modify the motion of an object.
  3. (astronomy) To modify the motion of a body by exerting a gravitational force.
  4. (mathematics) To modify slightly, such as an equation or value.

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