n 1: a feeling of mild anxiety about possible developments [syn: anxiousness]
2: the trait of seeming ill at ease [syn: unease, uneasiness]
v : disturb in mind or make uneasy or cause to be worried or
alarmed; "She was rather perturbed by the news that her
father was seriously ill" [syn: perturb, unhinge, trouble, cark, distract, disorder]