perturb - verb

• disturb in mind or make uneasy or cause to be worried or alarmed
• disturb or interfere with the usual path of an electron or atom
• cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull
• throw into great confusion or disorder

perturb - thesaurus

cark   derange   disorder   disquiet   distract   trouble   unhinge