Perturb

häiritä

((transitive) to cause (something) to be physically disordered or disturbed)

häiritä

((transitive) of a celestial body: to modify the motion or orbit of (another celestial body) by exerting a gravitational force; to slightly modify (the motion of an object))

häiritä

((transitive) to slightly modify (a set of equations or their solutions), producing deviations from a simple, easily solvable problem)

häiritä

((transitive) to influence (a process or system) so that it deviates from its normal state)