[{"Bold_text": "verb (used with object)", "List Items": ["to disturb or disquiet greatly in mind; agitate :I can see how such a massive change in your routine would perturb you.Synonyms: worry , trouble Antonyms: pacify", "to throw into great disorder:Huge construction projects can take years to finish, and meanwhile, can greatly perturb the neighborhood.Synonyms: muddle , disarrange , confuse", "Astronomy.to cause perturbation perturbationin the orbit of (a celestial body)."]}]